Vocabulary Building at the Grocery Store

Miles and I went grocery shopping today. As we walk the aisles, I point out various food items to Miles. Our conversation yesterday went something like this...

Me: Look Miles, there's the milk. Can you say "milk?"
Miles is silent.
Me: Oh, Miles, there are the bananas. Can you say "banana?"
Miles is silent.
Me: Mmmmm. Look, yogurt!
Miles is silent.
Me: Let's go get a bagel. Can you said "bagel?"
Miles is silent.
Me: Doritos! Do you see the Doritos? Can you say "Doritos?"
Miles is silent.
Me: Look at this, Miles. This is beer. Can you say "beer?"
Miles: BEER! BEER! BEER!!!