Marcelino Montalvo is used to people asking him to leave. It’s not because of his personality. By all accounts, Montalvo — most people just call him “Junito” — is a very personable guy.

Instead, you’ll find all things lemon. Or orange. Or lemon and orange. The flavors of two characters that denizens of the Gideon’s Bakehouse world know well. Stuart Valencia was the first ...