Immersion Coffee in downtown San Diego's Little Italy occupies a compact espresso bar on Kettner Boulevard, the second brick-and-mortar for an operation that started as a mobile truck before opening a La Jolla storefront. The fourth-wave coffee program sources competition-level beans from Colombia and beyond, pairs them with ceremonial-grade matcha from Kyoto, and builds house-made syrups in-house — a globally sourced ingredient pipeline that runs parallel to the Italian-roast tradition at Caffe Italia on India Street. Signature drinks include an Orange Latte, Strawberry Matcha, and Roasted Black Sesame Latte, each constructed around scratch-made flavor bases rather than bottled syrups. The mid-century modern interior features a record-playing sound system and counter seating designed for quick handoffs, a grab-and-go format that complements the seated pastry service at Bonjour Patisserie around the corner in Little Italy. Pour-over service runs single-origin filters like the Colombia Golden Hour, calibrated per cup for guests who want a slower, guided tasting experience alongside the espresso bar.