Meanwhile, halve and de-seed the chilli and finely chop with the top leafy half of the mint. Place in a bowl, finely grate over a little lemon zest, then squeeze in all the juice. Add 2 tablespoons of extra virgin olive oil, mix, taste and season to perfection with sea salt and black pepper.
Pinch the skins off any large beans, then pour the beans and peas on to a platter, toss with a few splashes of the reserved cooking water, then spoon over the dressing. Drizzle with 1 more tablespoon of extra virgin olive oil and toss together at the table before tucking in.