To make the Guinness salt, reduce the Guinness in a small saucepan to one-fifth of its volume. Finely chop the parsley leaves and stir into the reduced Guinness on low heat. Continue to cook for 2 minutes, stirring until a dark paste is formed. Spread the paste in a thin layer over a baking tray and bake in a very low 50 degrees Celcius oven for a few hours or overnight until completely dried. Scrape the dried mixture into a mortar and grind a few times until just broken up. The Guinness flakes should still be quite large and textured. Add the remaining salt ingredients and combine.
Heat the oil to 180 degrees Celcius. Slice the squid into thin strips and toss in the rice flour. Shake off any excess flour and deep fry in batches until just cooked. Drain well. Toss the squid in 1 tsp of Guinness Salt and chopped chives. Serve with dressed salad leaves and lime wedges.