TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The transesterification is performed using a lower alkyl alcohol (preferably methanol). The roasted coffee is ground prior to extraction; or is ground and extracted with water prior to extraction. The triglycerides are extracted using an organic solvent or by dry distillation. The method (M2) further involves: mixing the coffee biofuel with a second fuel (f2) to produce a fuel mixture (m1) having a greater stability than the fuel. In the method (M2), the extracting triglycerides from the water extracted coffee or extracting triglycerides from the spent coffee grounds involves extracting the triglycerides with an organic solvent or dry distilling the coffee. The process (p1) and (p2) further involves: distributing the biofuel. The distributing step for the process (p1) involves: transporting the biofuel to several distribution centers; or distributing the biofuel from the production facility. The distributing step for the process (p2) involves transporting the biofuel to several distribution centers; or distributing the biofuel from the at least one source. The method (M4) further involves: esterifying the separated free fatty acids. The esterification is an acid catalyzed esterification. Preferred Components: The fuel is stable for at least 12 hours (preferably at least 24 hours, especially at least 7 days, particularly at least 30 day). The fuel comprises antioxidants (at least 5 wt.%). The biofuel mixture comprises the fuel prepared by the method (M1) (at least 5, preferably at least 10 wt.%). The second fuel (f1) comprises B20 (blend of 20% biodiesel and 80% petroleum diesel), petroleum based fuel and diesel. The second fuel (f2) is a biodiesel fuel, biodiesel fuel blend, or petroleum fuel. The fuel mixture (m1) comprises coffee biofuel (at least 5, preferably 10 wt.%). The solvent comprises at least one of methanol, ethanol, and acetic acid. ACTIVITY - Fertilizer. No biological data given.    MECHANISM OF ACTION - None given.    EXAMPLE - Roasted, ground, water-extracted coffee was refluxed for 1-6 hours with ether or dichloromethane. The resulting solution was filtered through a paper filter to remove coffee grounds and other particulate matter. Triglycerides were collected by evaporating the solvent on a rotary evaporator. The resulting triglycerides were transesterified using methanol and sodium hydroxide as a catalyst. Methanol was added in an amount of 40 vol.% of oil used (e.g. 40 ml of methanol for 100 ml of oil). Sodium hydroxide was added in an amount of 1.5% of the weight of the oil (e.g. 1.5 g of NaOH was used for 100 g of oil). The mixture was refluxed for two hours. After that time, the remaining methanol was removed on a rotary evaporator. The residual material was extracted with ether and separated from sodium hydroxide and glycerin using a separatory funnel. The pH of the fatty acid ester portion (top layer) was determined to be 8. The fatty acid ester product was then washed with acidified water (typically using an organic acid, such as tannic acid, such as a 0.1 wt.% solution in water) at a 1:1 ratio by volume to remove the traces of catalyst (NaOH) and soap. After washing, the pH of the fatty acid ester was 6.8. The fatty acid ester was evaluated by HPLC. A 150x 3.2 mm stainless steel 18C (7 mu m particles) column was used with two mobile phases applied in a gradient. Methanol was used as one mobile phase. The other mobile phase was a mixture of isopropanol and hexane, 4:5 vol.%. The firing properties of the biofuel were compared with a standard biodiesel sample B100. A cotton swab was dipped in each sample. Open flame was applied to the saturated tips of the swabs. The time to catch fire and flame properties of the coffee biodiesel were comparable to that of the B100 sample. After burning, the swab used for the coffee biodiesel was clean, indicating that the biodiesel fuel was comparatively clean, as dirty fuels, such as those which contained sulfur, typically leave a layer of soot or other material on the swab after burning. The biodiesel produced from coffee contained antioxidant, catechol, which was included a unit on many of the antioxidant known to be present in coffee, was passed through an HPLC column.