Lydia's Mexican Casserole

• 6 corn tortillas
• 3 garlic (cloves)
• 1 onion
• 1 jalapeno chili
• 900 ml non-fat yogurt
• 750 gr green chilies (whole)
• 350 gr firm tofu
• 300 gr tomatoes (diced)
• 190 gr tomato salsa
• 16 ml dry no-oil vinaigrette