Portugal: piri-piri sauce

1. Pour the oil into a small, screw-top jar and add the chilli peppers, bay leaf and lemon rind.
2. Screw on the top and shake.
3. Leave to stand in a warm place for at least 24 hours before use. It will keep at room temperature indefinitely.
4. Ready made piri-piri can be bought by the portuguese, who use it a good deal as a spicy condiment on pasta, fish or meat and also to flavour stews.