S’mores-a-jar from Beta5 Chocolates: milk chocolate mousse, smoked aerated chocolate, toasted marshmallows, chocolate twigs, and graham crackers. It’s their April dessert-in-a-jar feature, and a great little play on the real thing. I might as well talk about their April cream puff ring, which I tried a few days ago: chopped toasted hazelnuts,  filled with a…