Tilapia with Açaí Sauce

Açai, the little crown jewel berry from the Amazon, is taking America by storm due to its high nutritional content. It can be a truly interesting ingredient if bought in frozen pulps, and can be prepared in many ways, both sweet or savoury, just like a berry. Its taste is so strong - a blend of red wine and chocolate - that the fruit is often matched with other berries to lighten it up a little. In this recipe, açai adds a depth of flavour to a sauce that complements a simply