I had never tasted homemade marshmallows until I was well into my 30s, but the moment the light as air sweetness hit my lips, I knew. I had been conned. Marshmallows that you buy, you know the ones in a bag that line the bottom shelf in a grocery store are sad, pathetic imposters. The problem of course it that true, homemade marshmallows don't have a fantastic shelf life but holy whipped heaven they are totally worth making. One caveat, you really need a stand mixer. They absolutely can me …