Homemade Oat Milk
A simple two-ingredient oat milk — rolled oats and water blended and strained for a creamy, dairy-free base ready for cocktails, coffee drinks, and everyday use.
Oat milk has become the most popular dairy-free milk for cocktails and coffee, and homemade versions cost a fraction of the bottled commercial brands. The core recipe is just rolled oats and water blended together for thirty seconds and strained twice through a fine mesh to remove the starchy pulp. The key to non-slimy oat milk is keeping the blend time short and refusing to press the pulp during straining. The resulting milk is lightly sweet, creamy without being heavy, and works in White Russians, espresso martinis, and any cocktail where a non-dairy creamy component is wanted.
- 1 cuprolled oats(certified gluten-free if needed)
- 4 cupswater(cold filtered)
- 1 pinchsalt(optional, enhances flavor)
- 1Add the rolled oats, cold water, and optional pinch of salt to a high-speed blender — do not soak the oats first because pre-soaking causes sliminess.
- 2Secure the lid and blend on high speed for exactly thirty seconds — longer blending breaks down the oats too much and releases starch that creates the dreaded slimy texture.
- 3Place a fine mesh strainer over a large mixing bowl or pitcher and pour the blended mixture through it, letting gravity do the work without pressing down on the oat pulp.
- 4Discard the pulp without squeezing — pressing releases starch back into the liquid and creates sliminess; the pulp can be saved for smoothies, baking, or discarded.
- 5For the smoothest finish, strain the milk a second time through a clean cheesecloth or thin kitchen towel into the final storage container.
- 6Transfer the oat milk to a clean glass bottle or jar and refrigerate until cold.
Store in a sealed glass container in the refrigerator for up to five days — significantly shorter than most store-bought brands because homemade oat milk lacks the preservatives and stabilizers used commercially. Shake or stir well before each use because natural separation is expected and not a sign of spoilage. Do not heat or boil the milk because heating breaks down the starches and creates thick, clumpy texture; add it to hot drinks right before serving instead. Keep refrigerated.
Rolled oats are the right texture — quick oats over-process and turn slimy, while steel cut oats do not break down enough and produce weak, watery milk. Certified gluten-free oats are essential for guests with celiac disease because most commercial oat supplies are cross-contaminated with wheat during processing. Do not soak the oats before blending because soaking starts the starch release that ruins texture. Thirty seconds of blending is the upper limit — blending for a full minute produces noticeably slimy milk even with technique. Cold water, not warm, keeps the oats from releasing too much starch. Do not press the oat pulp during straining; let gravity work even if it takes a few minutes. For barista-style oat milk that can foam and steam in espresso drinks, add one tablespoon of neutral oil, such as sunflower or grapeseed, during the blending stage. A small pinch of salt is optional but meaningfully enhances the perceived creaminess.
Oat milk has deep Nordic roots — Sweden was home to the original plant-milk research that led to Oatly, which Professor Rickard Öste of Lund University developed in the early 1990s as a lactose-free alternative for people with dairy intolerance. Oatly launched globally in 2017 and sparked the explosive growth of oat milk as both a retail and food-service category, particularly in specialty coffee where its protein and fat composition produce foam and steam performance closer to dairy than any other plant milk. Homemade versions gained popularity starting around 2019 as consumers recognized that commercial oat milk costs five to seven dollars per half-gallon while two cents of rolled oats and water produce a comparable product. The home-blending technique has been documented by food writers including Love and Lemons, Downshiftology, and Minimalist Baker, all of whom converge on the short-blend, no-press, double-strain method used here.
For barista-style oat milk similar to Oatly, add one tablespoon of neutral oil (grapeseed, sunflower, or rapeseed) and a teaspoon of tapioca starch during blending for improved steaming and foaming performance. A vanilla oat milk made with a quarter teaspoon of vanilla extract and a tablespoon of maple syrup produces an excellent coffee drink enhancer. For chocolate oat milk, blend in two tablespoons of cocoa powder and two tablespoons of maple syrup for a dessert-quality non-dairy drink. Chocolate or strawberry oat milk both work well in kid-friendly mocktails and adult cream-based cocktails. For a thicker, cream-like consistency suited to White Russians and other creamy cocktails, reduce water to three cups total for a two-cup yield. A coconut-oat milk blend made by substituting one cup of unsweetened canned coconut milk for one cup of the water adds tropical depth.
Oats are inherently gluten-free but are often processed on equipment shared with wheat, barley, and rye. Guests with celiac disease or severe gluten sensitivity must verify the specific brand is certified gluten-free (typically labeled as such). Naturally vegan and dairy-free. No common nut or soy allergens unless the optional oil used in barista-style variations is a nut-derived oil.