This creamy, rich mousse has the same texture as non-vegan versions, but is egg-free and lower in fat and calories. Experiment with almond or vanilla extract instead of the peppermint for different flavors. Or try adding ¼ cup very strong espresso. Cream of tartar, a by-product of the wine-making process, helps stabilize the meringue, increasing volume and keeping bubbles from collapsing, but you can as easily make this without.