“Fun fine dining†may sound like an oxymoron, but that’s exactly the vibe at Aigre Doux. Mohammad Islam and Malika Ameen, the husband and wife chefs-owners behind the River North spot, have the cred to back up the fine-dining part, having both worked at The Ritz-Carlton Chicago and L.A.’s hip hangout Château Marmont. The table linens, china and stemware, and sophisticated décor up the...