Black Bean Burgers

Ingredients

• 4 burger buns
• 480 g ~ 2 cans cooked black beans
• 30 g ~ 2 tbsp tomato paste
• 120 ml water
• 40 g rice flour
• 15 ml ~ 1 tbsp olive oil
• 7 ml ~ ½ tbsp agave syrup
• 1 tsp salt
• 2 tsp smoked paprika
• 1 tsp garlic powder
• 1 tsp onion powder
• 1 tsp ground coriander
• ½ tsp ground cumin
• 4 tbsp avocado mayo
• 4 medium lettuce leaves