Leaven and Crust is a home bakery at 21 Choa Chu Kang Avenue 4, in Choa Chu Kang, making sourdough loaves and sourdough pizzas. The loaves come in an original sourdough and a garlic herb version, and customers say the garlic herb one is good enough to eat on its own. Reviewers praise the texture, the chew and the authentic taste, saying it holds its own against bakery chains. The truffle mushroom pizza is singled out as a favourite. Orders are placed with the home baker. Among the bakeries within a kilometre, Polar Puffs and Cakes and Châteraisé at Lot One, both at the same spot, are rated lower, though Châteraisé has more reviews.