I tried my best with my translation. I know some parts cannot be exactly right but this is what I got without just guessing.
"Attention, any person in the Spanish class. On Tuesday we go to start to learn about the food, and the best way to learn about the food is to eat, by supposing. Please do not eat a great lunch on Tuesday, because he has much food in class."
My brother said to write to you that he apologises but he has no allergies to send you. He can send a different food if you like.