Marinating the peas with the apple cider vinegar and olive oil will turn them an army green color but, don't be fooled, they will retain their bright flavor and crisp texture.
Combine the raw peas with the apple cider vinegar, olive oil, and a big pinch of salt and let marinate for minimum 30 minutes and up to 5 days
Heat the oven to 400F
Clean and cut the carrots in half or into large chunks
Toss the carrots in a glug of olive oil with a big pinch of salt and the chili flakes
Roast on a baking sheet until deeply browned and tender when pierced
To serve lay the carrots on to a platter, crumble the feta over the top, sprinkle the peas around spooning some of the marinating liquid over the whole thing, and then garnish with the mint leaves torn into pieces