6 venues in Reykjavik rated S to B for dairy-free, every tier backed by cited sources.
The kitchen is entirely plant-based, operating with oat milk, vegan yogurt, and vegan sour cream. No dairy products are present.
Plantan Kaffihús operates as a 100% vegan cafe, meaning no dairy products appear in any dish. The menu offers items such as vegan 'cheese' buns, BLTs with vegan mayonnaise, and cakes prepared without dairy. Oat milk is available for coffee drinks. Because the kitchen is entirely plant-based, the risk of cross-contamination from dairy is eliminated.
The restaurant explicitly states that it says no to dairy products. The menu uses "cream cheese" in a few salads and "cream" in pumpkin soup, and lists vegan cheese for the croquette and burger, but these are plant-based alternatives, not dairy. The owner has been vegan for 30+ years and the kitchen is 100% plant-based, so dairy is not stocked as an ingredient. No dedicated dairy-free equipment is separately noted, but the structural absence of dairy on premises makes this very safe for dairy-free diners.
The menu labels many dishes as lactose-free (laktósalaust). The 5-course set menu can be adjusted to be gluten-free and lactose-free. The kitchen uses a shared space for dairy and cannot guarantee that any item is free from cross-contamination. Diners with dairy intolerance will find clearly marked options but should verify modifications with the staff.
FindMeGlutenFree lists the restaurant as "Good for dairy-free" based on 7 community ratings. On the venue's own site, an LF (lactose-free) marker appears on several menu items: salmon ceviche, traditional meat soup, baked sweet potatoes, vegan tagliatelle, and vegan pavlova. Multiple reviews from coeliac diners mention that dairy-free needs were accommodated. One reviewer noted that the kitchen made a special gluten-free and dairy-free sauce. Staff asked about dairy. However, no dedicated dairy-free equipment or kitchen is mentioned, and many dishes contain butter, cream, or cheese. Tier B captures the reliable-but-shared-kitchen situation.
The kitchen is vegetarian and uses dairy (Lacto category on HappyCow). Oat-based sour cream and vegan cheesecake are offered, but the standard menu also includes items with dairy (e.g. traditional cheese pierogi). No dedicated dairy-free equipment or separate kitchen area is mentioned; cross-contamination is likely in a shared vegetarian kitchen. Best for dairy-free diners who can communicate clearly with the Polish owners.