You can't beat a home made mint sauce and this is easy. If you plant a sprig of mint in a garden it spreads itself out and comes up every year. Then all you need is a little granulated sugar, vinegar and hot water. This mint sauce tastes far superior to anything you can purchase in a jar and it's natural ingredients. It is delicious on baby new steamed potatoes. the mint oil from it is also good for stomach upsets and indigestion. The original polo mints in the green tube also contain peppermint oil - just so you know!! So it's a good idea to keep some handy.
Here is the recipe