TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: In method (M1), the isolation of the alkyl ester of carboxylic acid is obtained by fractionation and/or distillation. The method (M1) further involves refining vegetable oil and/or alkyl esters by desliming/delicithination, fractionation, distillation, activated carbon purification, carbon adsorption, and/or bleaching; and further step of extensive bleaching of the fuel composition, where extensive bleaching comprising the steps of heating the vegetable oil to 220-300 degrees C, adding bleaching clay (1-10%), stirring optionally under vacuum in at least 15 minutes, and separation of the bleaching clay and refined vegetable oil by filtration. The method further involves removing 6C carboxylic acids and/or derivatives from fuel composition; removing 16C and any higher order carboxylic acids and/or derivatives from fuel composition; additional step of adding at least one alcohol; additional step of adding at least one antioxidant selected from glutathione, vitamin C (ascorbic acid), melatonin and vitamin E (tocopherols and tocotrienols), Carotenoids (lycopene, carotenes), and enzymes such as catalase, superoxide dismutase and various peroxidases; and additional step of adding at least one coloring agent selected from a lithium salt or strontium salt, boric acid, borax sodium salt, barium salt, calcium salt, copper salt, potassium salt, cerium salt, cesium salt, and nitromethane. Preferred Components: The alkyl ester is selected from methyl ester, and/or ethyl ester. The isolated alkyl esters are at least one alkyl esters of 8-14C (preferably 8-10C, 8-12C, 10-12C, 10-14C or 12-14C) carboxylic acids. The alkyl esters (at least 80%) are fully saturated. The alkyl ester is selected from methyl ester, ethyl ester, propyl ester, and/or buthanyl ester (preferably methyl ester, and/or ethyl ester, especially methyl ester). The alkyl ester is methyl octanate, methyl decanoate, methyl dodecanoate, and/or methyl tetradecanoate. The vegetable oil is selected from coconut, corn, cottonseed, olive, palm, peanut, rape, rapeseed, canola, safflower, sesame, soybean, jatropha and/or sunflower oils (preferably sunflower oil, olive oil, rape oil, soy bean oil and jatropha oil, especially rapeseed oil). The alcohol comprises 1-6C selected from methanol, ethanol, propanol, butanol, pentanol, and/or hexanol (preferably methanol, ethanol, propanol and/or butanol, especially ethanol, methanol and/or butanol). Preferred Composition: The isolated alkyl esters have been isolated to the extent that the fuel composition comprises (wt.%): 8C alkyl esters (10-80, preferably 35-45, especially 15-25), 10C alkyl esters (10-80, preferably 25-35, especially 10-20), 12C alkyl esters (10-70, preferably 15-25, especially 45-55), and/or 14C alkyl esters (0-40, preferably 5-15, especially 15-25). The composition further comprises a fragrance. The composition comprises at least one alkyl ester (at least 80 wt.%) of a 6-16C (preferably 8-14C) carboxylic acid, at least one alkyl esters (at least 70 wt.%) of 8-12C carboxylic acids, at least one alkyl esters (at least 60 wt.%) of 8-10C carboxylic acids, at least one alkyl ester (at least 70 wt.%) of 10-14C carboxylic acids, at least one alkyl ester (at least 40 wt.%) of 10-12C carboxylic acids, or any alkyl ester (less than 5 wt.%) of a less than or equal to 6C, greater than or equal to 18C or greater than or equal to 16C carboxylic acid. The composition has a melting point of less than 0 degrees C. The composition is liquid in the temperature of 0-60 degrees C. The composition has a viscosity at 22 degrees C, which is less than 10 cPoise (cP), less than 5 cP, less than 4 cP, less than 3 cP, less than 2.5 cP, less than 2 cP, less than 1.5 cP, or less than 1 cP. The composition has a viscosity of 5-0 (preferably 4-1, especially 3-1.5, particularly 2.5-1) cP at 22 degrees C. The composition has a surface tension of below 25 mN/m, 25-0 (preferably 25-10, especially 10-0) mN/m at 40 degrees C. The composition has a surface tension of below 100 mN/m, 75 mN/m, below 50 mN/m, below 25 mN/m, or 100-0 (preferably 75-25, especially 60-25) mN/m at 20 degrees C. The composition further comprises an alcohol (0.5-5 wt.%) selected from dichloromethane, butyl acetate, acetone, acetonitrile, ethyl acetate, methanol, ethanol, propyl alcohol, isopropyl alcohol, butyl alcohol (butanol), isobutyl alcohol, sec-butyl alcohol, tert-butyl alcohol, pentyl alcohol, hexyl alcohol, heptyl alcohol, octyl alcohol, nonyl alcohol, decyl alcohol, allyl alcohol, cyclopentanol, cyclohexanol, and benzyl alcohol; and glycols such as propylene glycol, ethylene glycol, dipropylene glycol, glycerol, diethylene glycol, tri-ethylene glycol, trimethylene glycol, hexylene glycol, butylenes glycol, 1,3-butanediol, thiodiethylene glycol, ammonium thioglycolate, cefatrizine glycol, polypropylene glycol, propylene glycol alginate; dichloromethane, butyl acetate, acetone, acetonitrile, and ethyl acetate. The composition further comprises an antioxidant, a coloring agent, and a fragrance. EXAMPLE - A fuel composition was prepared comprising: vegetable oil (1 l), ethanol or methanol (70-200 ml), potassium hydroxide or sodium hydroxide (1-5 g), butanol (2-15 wt./wt.%) and antioxidant to prevent premature oxidation of the composition.