Sonic Launches Two Cake Batter Milkshakes, Including One With Oreo Pieces

Just in time to ruin your summer diet, Sonic launched two new milkshakes: Yellow Cake Batter Classic Shake and Oreo Yellow Cake Batter Shake.

Both flavors are blended with vanilla ice cream and cake batter. They're almost identical except the one has Oreo pieces in it, which makes it way more exciting.

Sonic announced the limited-edition shakes earlier this week along with a celebratory promotion. Every night after 8 p.m., they're offering half-price shakes and $1.49 ice cream sandwiches.

According to Sonic, the promotion excludes a few things—namely, milkshake add ons. The extra toppings will cost you. Combos, Wacky Pack Kids Meals, Order Ahead, and delivery are not included either.