Vegetarian Burger with Lentil Meatballs

Ingredients

• burger buns - 4
• lentils - 9 oz (250 g)
• mushrooms - 9 oz (250 g)
• onions - 1 onion
• garlic - 4 cloves
• breadcrumbs - 3.5 oz (100 g)
• peanut tahini - 2 tbsp.
• sweet potatoes - 1/2 potato
• chia - 3 tbsp. with a tip
• soy sauce - 1 tbsp.
• thyme - 2 - 3 pinches
• black pepper - to taste
• paprika - a pinch of smoked
• olive oil
• lettuce - 4 leaves
• pickles - 3.5 oz (100 g)
• tomatoes - 1
• red onions - 1/2 onion
• mayonnaise - 2 tbsp.
• yogurt - 1 tbsp.
• mustard - 1 tbsp.
• salt - to taste
• vinegar - 1 tbsp.
• siracha sauce