What gets prayers?

We always say a prayer before eating our meals. Generally Isaac says the prayer for us, but sometimes Abigail is eating food on her own and she'll say it. Today Abigail wanted to have a snack between breakfast and lunch. She chose yogurt. I opened it and as she was getting her spoon to eat she looked up at me and said, "Does yogurt get prayers?" I told her that we pray for things we're thankful for and she started listing all the things for which she is thankful. "Yogurt, and milk, and water, and craisins, and chips, and cereal, and strawberries" so I guess all food needs prayers.