Vegan sandwich with sweet potato, green bean slaw & kasundi - Quicksand Food

Ingredients

• vegetable oil
• 2 medium sweet potatoes, thinly sliced
• 4 tbsp vegan mayonnaise
• 2 tbsp desiccated coconut, toasted
• wholemeal bread
• salt & pepper
• 1kg tomatoes
• 40g fresh ginger, peeled
• 3 cloves garlic, peeled
• 1½ tsp white mustard seeds, soaked in white wine vinegar overnight
• 1 tsp cumin seeds
• 1 tsp turmeric
• 1 tsp Kashmiri chili powder
• 3 red chillies, seeded
• 2 tbsp caster sugar
• 2 tbsp brown sugar
• tamarind paste
• 250g green beans
• ¼ iceberg lettuce, finely sliced
• ¼ Spanish onion, finely chopped
• 1½ tsp black sesame seeds
• 1½ tsp white sesame
• olive oil
• lemon juice