This tart is a real lifesaver; it uses solely kitchen staple ingredients and is very easy to assemble. It reminds me of the little tarts I used to make when I first started baking but is a bit more sophisticated and I love the addition of desiccated coconut, which goes well with the jam. You can use whatever jam you have in your store cupboard, all flavours work perfectly.
These little parcels certainly know how to make an entrance. When you serve them, make sure you get your guests to open the parcels themselves, to reveal the steaming mackerel inside. You can use this method with any fish; it’s nice served with a little rice.