Pizza with caramelised onions, salami and pickled chillies

By Matt Tebbutt From Saturday Kitchen Ingredients For the dough 500g/1lb 2oz strong bread flour, plus extra for dusting 2 tsp salt 10g/⅓oz dried yeast 300–350ml/10–12fl oz warm water For the topping dash olive oil knob of butter 1 large onion, thinly …