Baker's tuna and mushroom tart: Stage 4
Prepare and chop 1 onion.
Heat 3 tablespoons olive oil in a large saucepan on medium heat. When good and hot, add the onion, salt and pepper. Cook for 1 or 2 minutes without colouring.
Heat 3 tablespoons olive oil in a large saucepan on medium heat. When good and hot, add the onion, salt and pepper. Cook for 1 or 2 minutes without colouring.