This recipe is so easy there's really no excuse to continue buying a ready-made sauce. The sauce can be used to coat meat, vegetables, Quorn or Tofu. You can also stir it straight into the sautee pan half-way through stir-frying.
The Ketchup is probably the most 'naughty' ingredient in this sauce. However, you can always substitute with tomato puree, just add a little extra water to the mix. This recipe doesn't require any extra oil as the natural oils in the peanut butter are sufficient to keep the meat/quorn moist.
This sauce is sufficient to cover 600g of chicken, which makes around eight medium sized kebabs.