Trim the spinach roots slightly and make a cross-cut. Wash in a bowl of water, shake off excess water, and cut into 4cm pieces. Slice the bell peppers in half, remove stems and seeds, and cut into thin strips.

Slice the sausages diagonally into 1cm pieces.

Heat salad oil in a frying pan over medium-low heat. Add sausages and stir-fry for 1–2 minutes.

Add spinach and bell peppers, mix briefly, cover with a lid, and steam-fry for 1 minute until softened.