Arugula must be the ultimate palate cleanser. With its peppery bite, the green – especially when dressed simply in lemon juice, olive oil, salt and pepper – is my absolute favourite accompaniment to pizza or pasta, because it cuts through that carby and sometimes-cheesy richness we all love. It gives your taste buds a contrasting flavour, a little shock to the system that helps them head back to the main course for another round, as bracing as an ice plunge in between sauna sessions.