Tofu Katsu Curry - Meat Free Monday

Ingredients

• 2 tablespoons vegetable oil
• 1 small onion, finely chopped
• 1 carrot, grated
• 1 garlic clove, finely chopped
• 1 tablespoon medium curry powder
• 1 tablespoon plain flour
• 400 ml hot water
• pinch of sugar (optional)
• salt