Can you use unripe red chillies?

Yes, unripe red chillies can be used in cooking. They have a distinct flavor that can be more bitter and less sweet than their ripe counterparts. Unripe chillies are often used in various cuisines for their heat and can be added to stir-fries, salsas, or pickled. However, their spiciness may vary, so it's best to taste them first before using them in a dish.