Commercial oat milk sells for $3.99 to $5.49 per liter. The premise seemed straightforward: blend oats with water, strain, and save money. Reality proved more nuanced.
Basic method with standard kitchen tools
Initial attempts used rolled oats at $2.19 per kilogram. The ratio was one part oats to four parts water. Cheesecloth for straining cost $6.99 for a pack lasting three months. Total per-liter cost came to $0.73 including straining materials.
Texture remained thin compared to commercial versions. Separation occurred within 24 hours. Taste was acceptable but unremarkable.
Advanced techniques and equipment adjustments
Switching to higher-powered blenders reduced straining time from 12 minutes to 4 minutes. Adding small amounts of salt and oil improved emulsification. Using nut milk bags instead of cheesecloth reduced waste and improved consistency.
Buying oats in 10-kilogram bags from wholesale suppliers dropped costs to $1.47 per kilogram. Per-liter production cost decreased to $0.41. A $79 high-speed blender and $14 reusable straining bag represented upfront investments.
Four months of daily production
Beginner setup: $0.73 per liter, 15 minutes production time, basic quality, minimal equipment.
Experienced approach: $0.41 per liter, 8 minutes production time, commercial-grade texture, $93 equipment cost.
For households using two liters weekly, the advanced method saves $133 annually after equipment costs. Beginners still save $88 annually with zero upfront investment. Both methods require refrigeration space and consistent production schedules.