Purslane loves to trap stubborn grit in its crevices, so give it a good swish in a bowl of cold water and lift it straight out instead of dumping the bowl over it. Spin or pat it thoroughly dry - you want the leaves bone-dry so that luscious lemon and olive oil dressing actually clings rather than sliding off into a watery pool.

Keep your tomatoes and cucumbers diced small and shave the onion paper-thin so every forkful stays balanced and mellow. Don't toss everything together until you're practically walking to the table; salt and lemon immediately pull moisture from the veggies, and you want that crunch intact.