The quirky Diesel Cafe in Davis Square is home to big couches, pool tables, and even a photo booth. Diesel Cafe's hot chocolate is made from homemade chocolate sauce, steamed milk, and homemade whipped cream. While visiting, you'll want to try the signature hot chocolate: Tuck's Turtle. It comes in one size — large — and is mixed with caramel and hazelnut syrup.

Location: 257 Elm St., Somerville.
Prices: Small: $2.86. Large: $3.05. Tuck's Turtle: $4.58.