If double chocolate salted caramel birthday cake doesn’t get your mouth watering, then you must be taking Veganuary too seriously. This cake is heaven. So indulgent, so moist, so chocolatey. I love adding a little espresso powder to anything with chocolate in it. It’s such a great thing to keep in the pantry, even if you don’t actually like drinking coffee. It also works brilliantly in brownies to really bring…