Looking on the internet deeply has found these results:

Potatoes are brain food. is the most popular phrase on the web.

Potatoes is brain food. 10 results on the web	Potatoes are brain food. 13 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Nov 25, 2013 ... Some people say that fish is brain food. Try one of these Science Buddies Project Ideas, and you may decide that potatoes are brain food too! Nov 27, 2013 ... Some people say that fish is brain food. Try one of these Science Buddies Project Ideas, and you may decide that potatoes are brain food too! Complex carbohydrates like potatoes are "brain food they give you energy." And they help to stabilize blood sugar. Hunger is a state of low blood sugar.

Potatoes is brain food.

10 results on the web

Potatoes are brain food.

13 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Nov 25, 2013 ... Some people say that fish is brain food. Try one of these Science Buddies Project Ideas, and you may decide that potatoes are brain food too!
Nov 27, 2013 ... Some people say that fish is brain food. Try one of these Science Buddies Project Ideas, and you may decide that potatoes are brain food too!
Complex carbohydrates like potatoes are "brain food
they give you energy." And they help to stabilize blood sugar. Hunger is a state of low blood sugar.