Step by step
Preparing the dough
Use the yeast: In a large mixing bowl, mix warm milk, warm water and granulated sugar. Sprinkle the dry yeast over the mixture and let it sit for 5-10 minutes until it turns into powder.
Mixing the dough: Add vegetable oil and salt to the yeast mixture. Add the flour slowly, one cup at a time, and mix until a soft dough forms. Knead the dough by hand for about 8-10 minutes until it becomes smooth and elastic.* Ferment the dough: Place the dough in a lightly oiled bowl, cover it with a clean cloth and leave it to ferment in a warm place for 1 hour, that is, until it doubles in volume.
Preparing the stuffing
Chop the vegetables: Finely chop the red pepper, yellow pepper, tomato, green tomato, green pepper and green onion.
Combine with cheese: In a mixing bowl, combine chopped vegetables with Cheddar cheese. Mix well until you get a smooth filling.
Assembling the rolls
