This is one showstopper of a dessert. Not only does this recipe produce an ethereally fluffy cloud of sweet and tart goodness, but it’s also the model of efficiency in that it leaves you with zero leftover egg yolks – unlike typical meringue situations which leave you scrambling online to find a recipe requiring for four egg yolks. Here we use the reserved yolks to make a luxurious, tart lemon curd which beautifully balances the sweet, marshmallow-y meringue.