Grow a pot of basil and let it run to flower. Then cut off the flowers and place in a screw cap bottle ... top up with some scrummy extra virgin olive oil (the best you can afford) and lay it down in a dark place. Half turn the bottle a couple of times a day.

You will end up with the most gorgeous basil-infused olive oil... wonderful for salad dressings and for cooking with.

Don't leave the flowers in the oil indefinately as they can turn mouldy.