Patti Putter is taking a class to learn to play golf. Her teacher, Gandolf Golfer, is a golf pro. He has a pocket filled with purple golf tees, Patti's favorite color. On seeing the purple tees, Patti is no longer paying attention to the instruction, but instead is staring longingly at the tees in Gandolf's hands.

Gandolf notices Patti staring at the tees, and he states "Patti, you seem more interested in these purple tees than in what I'm trying to say. I promise that I will give you these tees at the end of the lesson today."

Patti gets visibly giddy with excitement, and without saying anything, jumps in her golf cart and speeds off in the direction of the clubhouse.

When the class arrives at the final hole for the day's lesson, Patti pulls up her cart, and gets out holding several purple golf balls. She eagerly announces "I'm ready for my tees!"

Gandolf replies "Oh, I'm sorry Patti. I'm actually running low on golf tees, and I need these for the next class. I'm afraid you can't have these tees."

Patti retorts "You have to give them to me. You made an enforceable promise."

Is Patti correct in her assertion that Gandolf's promise is enforceable in this situation? That is, does this promise have consideration?