Beef And Bean Tostada

Ingredients

• 2 doz. corn tortillas
• 1 medium size can refried beans
• 1/2 c. chopped onion
• 1/2 pkg. Chorizo
• 1 lb. hamburger meat
• 1/2 onion, sliced into rings
• 1 1/2 c. diced tomatoes
• 1/2 head chopped lettuce
• 1 medium size container sour cream
• 1/4 c. milk, sour cream and salt