Celebrate Mother’s Day 2023 with Del Taco’s thoughtful promotion: a free milkshake accompanying any purchase. Treat your mom to her favorite meal and sweeten the deal with a complimentary shake. This deal is valid from Friday, 5/12/2023, through Sunday, 5/14/2023. Make the most of the weekend and cherish mom’s special day. Just remember, this offer is only available in the Del Taco app or at deltaco.com. So, mark your calendars and prepare for a delightful Mother’s Day weekend at Del Taco.