2) Spill two bags of crisps onto a baking sheet and put in oven to heat them up. When oil is visible on the crisps, take them out of the oven and sprinkle with the garlic spice. Let them cool and serve.
3) For the roasted garlic spice, preheat the oven to 180C/Gas 4.
4) Place the thinly sliced garlic between some parchment paper on a baking sheet. Bake until the garlic is dry, about 15 minutes. Remove from the oven and cool.
5) In a grinder add the dried garlic, salt, black peppercorns, mustard powder and chilli powder. Grind them all up.