A curry puff is basically a Singaporean version of a Cornish pasty, crimping and all. Frankly, with Old Chang Lee selling two puffs for £6 in Covent Garden, we suspect Greggs may be diversifying even more. Fillings include curried chicken, potato, and egg. Or, a Singapore chilli crab if you’re feeling adventurous. Everything else, like laksa and noodles, is also under a tenner.