Summer Watermelon and Halloumi Salad

Watermelon seems to me the essence of summer. During my South African childhood, we’d cool ourselves with long slices eaten in our hands. When I came to England, watermelon was often a disappointment – pale and tasteless – but it’s much better now (the darker the flesh, the sweeter it will be). I once had to make a dish on Saturday Kitchen for the adventurer Ben Fogle, who had declared watermelon his least favourite food. I changed his mind by wrapping fat sticks of