400 g of sweet potato
1/2 cup (scant) of milk
1 tablespoon of active dry yeast
100 g of crumbled Gorgonzola cheese
100 g of grated Parmesan cheese
100 g of grated Minas cheese
Parsley flakes to taste
Salt and pepper to taste
4 egg whites beaten until stiff
400 g of sweet potato
1/2 cup (scant) of milk
1 tablespoon of active dry yeast
100 g of crumbled Gorgonzola cheese
100 g of grated Parmesan cheese
100 g of grated Minas cheese
Parsley flakes to taste
Salt and pepper to taste
4 egg whites beaten until stiff
Peel and boil the sweet potatoes in salted water until they are very tender
Drain and mash them
In a bowl, mix together the mashed sweet potatoes, milk, yeast, cheeses, parsley, salt, and pepper
Gently fold in the egg whites and divide into buttered soufflé dishes
Bake in a preheated oven at 280°F for 20 minutes or until golden brown
Serve warm