f'real foods, a wholly owned subsidiary of Rich Products Corp., is celebrating its 20th birthday with the release of a Birthday Cake Batter Milkshake for a limited time.

I guess they liked it #SONIC #cakebattershake #yummy — Mandy Vinson (@mandyvinson101) June 28, 2019 Sonic is not the only dining chain to offer a cake batter-flavored milkshake, however.

The fast-food chain debuted its Brownie Batter Shake — and brought back its Yellow Cake Batter Shake — just in time for summer, and my straw is ready to start slurping.

Sonic Drive-In is bringing back two fan-favorite milkshakes with early access for app users. App users can get the Brownie Batter and Yellow Cake Batter milkshakes starting today, March 21. They ...

I guess they liked it #SONIC #cakebattershake #yummy — Mandy Vinson (@mandyvinson101) June 28, 2019 Sonic is not the only dining chain to offer a cake batter-flavored milkshake, however.