EXHIBIT 6

                             KONINKLIJKE AHOLD N.V.
                                Albert Heijnweg 1
                                 1507 EH Zaandam
                                 The Netherlands

                                                            April 27, 1998
The 1224 Corporation
6300 Sheriff Road
Landover, Maryland 20785

Attention:  David W. Rutstein

Gentlemen:

                  This letter confirms our mutual  understandings and intentions
concerning negotiations between Koninklijke Ahold N.V. (the "Purchaser") and The
1224  Corporation  (the  "Seller"),  regarding  the  possible  purchase  by  the
Purchaser,  directly or through one of its affiliates, of all of the outstanding
Class  AC  Voting  Common  Stock  (the "AC  Shares")  of Giant  Food  Inc.  (the
"Company") from the Seller.  It is the parties'  intention that the negotiations
regarding  such  possible  purchase  and  of  definitive  transaction  documents
continue  after the  execution  of this  letter  and the  parties  each agree to
negotiate in good faith.

                  During the period  from the date  hereof  until May 31,  1998,
none  of  the   Seller,   or  any  of  its   officers,   directors,   employees,
representatives,  agents or advisors (collectively  "Agents") shall, directly or
indirectly,   take  any  action  (other  than  an  action  directly  related  to
negotiations  with the  Purchaser)  to (i)  encourage,  initiate  or solicit the
making of an Acquisition Proposal (as defined below), (ii) engage in discussions
or  negotiations  with, or provide any  information  to, any entity or person in
connection  with,  or take any other action to  facilitate  any inquiries or the
making of any proposal that  constitutes,  or may reasonably be expected to lead
to, any Acquisition  Proposal,  or (iii) enter into an agreement with respect to
an Acquisition Proposal;  provided,  however, that, subject to compliance by the
Seller with the immediately  succeeding sentence, (a) the Seller, in response to
an unsolicited Acquisition Proposal from J. Sainsbury (USA) Holdings Inc. or any
affiliate thereof (collectively "Sainsbury"),  may participate in discussions or
negotiations  with,  or  furnish  information  to,  Sainsbury  if the  Board  of
Directors of the Seller reasonably  determines that the unsolicited  Acquisition
Proposal  proposed by  Sainsbury is  reasonably  likely to result in a Sainsbury
Superior  Proposal  (as defined  below) and  believes  (based upon the advice of
outside  legal  advisors of recognized  standing in the state of Delaware)  that
failing to take such action is  reasonably  likely to constitute a breach of its
fiduciary  duties and (b) the Seller may enter into an agreement with respect to
a Sainsbury  Superior  Proposal if, within ten days of receipt of written notice
from the Seller with respect to such  Sainsbury  Superior  Proposal  pursuant to
subclause (i) of the next succeeding  sentence,  the Purchaser fails to have (1)
executed and delivered to the Seller a Stock Purchase Agreement in substantially
the form of the April 17,  1998  draft of the Stock  Purchase  Agreement  by and
between the Purchaser  and the Seller  relating to the purchase by the Purchaser
from the Seller of the AC Shares (the "Draft AC








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April 27, 1998
Page 2


Stock  Purchase  Agreement"),  but as modified  (w) to eliminate  the  condition
contained  in  Section  6.6 of the  Draft AC Stock  Purchase  Agreement  and all
references  to a stock  purchase  agreement  by and  between the  Purchaser  and
Sainsbury,  (x) to change all  references to the Agreement and Plan of Merger by
and among the Purchaser, a wholly-owned  subsidiary thereof and the Company (the
"Merger  Agreement")  so as to refer  instead to the  agreement  referred  to in
subclause  (2) of this  sentence,  (y) to include in Section  2.2 thereof as the
price to be paid per AC Share by the  Purchaser  to the  Seller  thereunder  the
Agreed Upon Price (as defined  below) or, if there is no Agreed Upon Price,  the
price per AC Share offered by Sainsbury to the Seller  pursuant to the Sainsbury
Superior Proposal and (z) to reflect the mutually  acceptable  resolution of the
issues that have been raised by the  Purchaser or the Seller with respect to the
Draft AC Stock  Purchase  Agreement and that have not been resolved prior to the
date hereof which  resolution the Purchaser and the Seller agree to negotiate in
good  faith,  and  (2)  executed  and  delivered  to the  Company  an  agreement
containing the representations,  warranties and covenants contained in the April
17,  1998  draft of the Merger  Agreement  (the  "Draft  Merger  Agreement")  as
modified to reflect the mutually  acceptable  resolution of the issues that have
been  raised by the  Purchaser,  the Seller or the Company  with  respect to the
Draft Merger Agreement and that have not been resolved prior to the date hereof,
which  resolution  the  Purchaser and the Seller agree (and the Seller agrees to
use its best  efforts to cause the  Company) to  negotiate  in good  faith.  The
Seller  promptly  shall  advise the  Purchaser  (i) orally and in writing of the
receipt of any  Acquisition  Proposal  (including  from or  otherwise  involving
Sainsbury)  and of the identity of the entity or person making such  Acquisition
Proposal and of the material  terms thereof and of any changes  thereto and (ii)
orally prior to commencing any discussions or negotiations between the Seller or
any of its Agents,  on the one hand, and Sainsbury or any of its Agents,  on the
other hand,  (x)  regarding  an  Acquisition  Proposal by Sainsbury or (y) which
could  reasonably  lead  to a  Sainsbury  Superior  Proposal,  and  subsequently
regarding the progress of any such negotiations or discussions.
                  As used  herein  the term  "Acquisition  Proposal"  means  any
proposal to purchase or acquire,  directly or  indirectly,  all or any of the AC
Shares of the Company,  a substantial amount of the assets of the Company or any
of its  subsidiaries  or more than 10% of any class of equity  securities of the
Company or any of its  subsidiaries,  any tender offer or exchange offer that if
consummated would result in any person  beneficially owning more than 10% of any
class of  equity  securities  of the  Company  or any of its  subsidiaries,  any
merger,  consolidation,  business  combination,  sale of  substantially  all the
assets,  recapitalization,   liquidation,  dissolution  or  similar  transaction
involving the Company or any other transaction,  the consummation of which could
reasonably be expected to dilute materially the benefits to the Purchaser of the
acquisition  of the AC  Shares.  As used  herein  the term  "Sainsbury  Superior
Proposal" means any bona fide proposal from or otherwise  involving Sainsbury to
purchase  all of the AC Shares of the  Company in cash at a price per share that
is either (x) greater than the price per AC Share agreed upon at the time by the
Purchaser  and the Seller (the "Agreed Upon Price") or (y) if the  Purchaser and
the Seller have not reached an  agreement  on the price to be paid per AC Share,
greater than the price per AC Share most recently  proposed to the Seller by the
Purchaser, and on terms which the Board of Directors of the Seller determines in
its good faith reasonable judgment (based upon the advice of







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April 27, 1998
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outside  financial and legal  advisors) to be as or more favorable to the Seller
and the  Company  than  the  transactions  contemplated  by the  Draft  AC Stock
Purchase  Agreement (i) which is not subject to a financing  condition and as to
which  Sainsbury  has  represented  and  warranted to the Seller in writing that
financing  is or will be  available  and (ii)  which  does not  provide  for any
breakup  fee or other  inducement  to  Sainsbury  other  than  reimbursement  of
documented  out-of-pocket  expenses  incurred in  connection  with the Sainsbury
Superior Proposal.

                  Except as  otherwise  required by law,  neither of the parties
hereto (nor any  affiliate,  or Agent  thereof) shall issue any press release or
make any other  statement  intended  for  public  distribution  relating  to, or
connected with, this letter or the matters  contained  herein without  obtaining
the prior approval of the other party hereto.

                  Each of the parties hereto  recognizes and acknowledges that a
breach by it of any  agreements  contained  in this  letter will cause the other
party to sustain  damages for which it would not have an adequate  remedy at law
for money  damages,  and therefore each of the parties hereto agrees that in the
event of any such breach the aggrieved  party shall be entitled to the remedy of
specific  performance of such  agreements  and  injunctive  and other  equitable
relief in addition to any other remedy to which it may be entitled, at law or in
equity.

                  Except for the agreements  set forth in the three  immediately
preceding paragraphs),  this letter does not represent any binding commitment or
legal  obligation  of any kind  whatsoever  by the  Purchaser  or the  Seller in
connection  herewith with respect to the transaction  contemplated  hereby. Such
binding  commitment  or  legal  obligation  shall  arise  only  when  and if the
definitive  transaction  documents,  developed  as a result of the  negotiations
between the parties are in fact executed by the parties.

                  Notwithstanding  anything  contained  in  this  letter  to the
contrary,  this letter may be  terminated  by either the Purchaser or the Seller
upon  delivery  of  written  notice  to the  other  party to such  effect if the
Purchaser  and Seller  have not agreed on or prior to May 4, 1998 upon the price
per AC Share that would be paid by the  Purchaser to the Seller  pursuant to the
AC Stock Purchase Agreement. In the event of such termination, this letter shall
become void and have no further effect.

                  This letter shall not be amended or modified except in writing
signed by the parties hereto.

                  This letter shall be governed by, and  construed in accordance
with, the laws of the State of Delaware. The parties agree that any legal action
or proceeding relating to this letter, or for recognition and enforcement of any
judgment in respect  thereof,  shall be instituted in the courts of the State of
Delaware,  the courts of the United  States of America  located in Delaware  and
appellate courts of any thereof.







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April 27, 1998
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                  This letter may be executed in one or more counterparts,  each
of  which  shall  be an  original,  but all  such  counterparts  shall  together
constitute but one and the same instrument.

                  If the foregoing correctly sets forth our mutual understanding
with  respect to the  proposed  negotiations,  please so indicate by signing the
enclosed copy of this letter and returning it to us.

                                                     KONINKLIJKE AHOLD N.V.


                                            By /s/ Robert Zwartendijk
                                               -------------------------------
                                               Name: Robert Zwartendijk
                                               Title:   Executive Vice
President

Acknowledged and Agreed, this
27 day of April, 1998

THE 1224 CORPORATION



By /s/ David W. Rutstein
   ---------------------------------------
     Name: David W. Rutstein
     Title:   Vice President and Secretary