POWER OF ATTORNEY

        The undersigned constitutes and appoints Jack Tang, Rebecca Yang, Heidi
Steele, Zachary Swartz and Jalpit Amin as the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, for the undersigned and in the undersigned's name, place and
stead, to sign any and all Securities and Exchange Commission statements of
beneficial ownership of securities of Del Taco Restaurants, Inc. (the "Company")
on Schedule 13D as required under Section 13 and Forms 3, 4 and 5 as required
under Section 16(a) of the Securities Exchange Act of 1934, as amended, and any
amendments thereto, and to file the same with all exhibits thereto, and other
documents in connection therewith, with the Securities and Exchange Commission,
the Company and any stock exchange on which the Company's stock is listed,
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform each act and thing requisite and necessary to be
done under said Section 13 and Section 16(a), as fully and to all intents and
purposes as the undersigned might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, and each of them, may
lawfully do or cause to be done by virtue hereof.

        A copy of this power of attorney shall be filed with the Securities and
Exchange Commission. The authorization set forth above shall continue in full
force and effect until the undersigned revokes such authorization by written
instructions to the attorneys-in-fact.

        The authority granted hereby shall in no event be deemed to impose or
create any duty on behalf of the attorneys-in-fact with respect to the
undersigned's obligations to file Schedule 13Ds and Forms 3, 4 and 5 with the
Securities and Exchange Commission.

Dated: 6/25/15
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                                       /s/ Patrick Walsh
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                                       Patrick Walsh