Layered Tex

• 2 ripe avocadoes
• 2 tomatoes
• 475 gr black beans
• 240 ml sour cream
• 190 gr cumin (ground)
• 140 gr iceberg lettuce (chopped)
• 55 gr cheddar cheese
• 6 gr black olives (chopped)
• 5 ml lemon juice
• 3 gr chili powder