1 red chilli, finely chopped
handful fresh coriander, finely chopped
1 lime, zest and juice
2 spring onions, green tips only, thinly sliced into rounds
4 whole (or 8 halves) frozen corn on the cobs
1 heaped tbsp gluten-free mango chutney
1 tsp chaat masala (optional)
salt
50g/1ΒΎoz unsalted butter