TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Host: The fatty ester production host comprises a heterologous nucleic acid sequence encoding an ester synthase (preferably atfA1, wax-dgat, or mWS); comprises a heterologous nucleic acid sequence encoding a thioesterase (preferably tesA, 'tesA, tesB, fatB, fatB2, fatB3, fatB (Met141Thr), fatA, or fatA1); or comprises a heterologous nucleic acid sequence encoding an acyl-coenzyme A(CoA) synthase (preferably fadD, fadK, BH3103, yhfL, Pfl-4354, EAV15023, fadD1, fadD2, RPC4074, fadDD35, fadDD22, faa3p, or a gene encoding ZP01644857). The fatty ester production host either lacks a nucleic acid sequence encoding for an acyl-CoA dehydrogenase, or expresses an attenuated level of an acyl-CoA dehydrogenase. The fatty ester production host is selected from a mammalian cell, plant cell, insect cell, yeast cell, fungus cell, filamentous fungi cell, or bacterial cell selected from Gram-positive bacteria and a Gram-negative bacteria, form genus Escherichia (preferably a cell of E. coli, or strain B, C, K, or W of E. coli cell); Bacillus (preferably a cell of B. lentus, B. brevis, B. stearothermophilus, B. licheniformis, B. alkalophilus, B. coagulans, B. circulans, B. pumilis, B. thuringiensis, B. clausii, B. megaterium, B. subtilis, or B. amyloliquefaciens); Lactobacillus, Rhodococcus (preferably a cell of R. opacus); Pseudomonas, Aspergillus (preferably a cell of A. awamori, A. fumigates, A. foetidus, A. nidulans, A. niger, or A. oryzae); Trichoderma (preferably a cell of T. koningii, T. viride, T. reesei, or T. longibrachiatum); Neurospora, Fusarium, Humicola (preferably a cell of H. insolens, or H. lanuginose); Rhizomucor (preferably a cell of R. michei); Kluyveromyces, Pichia, Mucor (preferably a cell of M. michei); Myceliophtora, Penicillium, Phanerochaete, Pleurotus, Trametes, Chrysosporium, Saccharomyces, Stenotrophamonas, Schizosaccharomyces, Yarrowia, Streptomyces (preferably a cell of S. lividans, or S. murinus); or an Actinomycetes cell; a cell of Chinese hamster ovary (CHO) cell; COS, VERO (African green monkey kidney cells); baby hamster kidney (BHK) cells, HeLa (cervical cancer cells), Cv1 (African green monkey fibroblast cells), MDCK (median Darby canine kidney epithelial cells), 293 (human embryonic kidney cells), 3T3 (mouse fibroblast cells), and PC 12 (rat pheochromocytoma cells) (preferably fatty ester production host is a bacterium; especially E. coli). Preferred Method: In the method (M1), the methanol is provided at a concentration of ( greater than or equal to 0.1, preferably 2-6) vol./vol.%. The step of converting the methanol involves performing fermentation; or produces a product stream, and the method further involves performing a separation process to extract the fatty acid methyl ester from the product stream. The separation process is selected from filtration, distillation, and phase separation process. The method (M1) further involves administering a production substrate to the fatty ester production host, where the production substrate is utilized by the fatty ester production host to produce fatty acid methyl esters.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The fatty acid methyl ester produced by the fatty ester production host in the method (M1) is of formula B'COOCH3; or the fatty ester production host produces a fatty acid methyl ester composition comprising more than one fatty acid methyl ester, where the fatty acid methyl ester composition comprises at least a first fatty acid methyl ester of formula B1COOCH3 and a second fatty acid methyl ester of formula B2COOCH3.B'=( greater than or equal to 6, preferably 6-30, more preferably greater than or equal to 10, especially 12-14, greater than or equal to 16 or 18)C chain;B1 and B2= greater than or equal to 6C chain.Provided that: B1 and B2 are not the same. Preferred Definitions:    B''=monounsaturated or polyunsaturated 6-30C chain.    EXAMPLE - Fatty ester production by utilizing mixed alcohols, was carried out as follows. M9 minimal media (6 g/L Na2HPO4, 3 g/L KH2PO4, 0.5 g/L NaCl, 1 g/L NH4C1, 1 mg/L thiamine, 1 mM MgSO4, 0.1 mM CaC12, 20 g/L glucose) productions were carried out using E. coli strain C41 (DE3 Delta fadE (acyl-CoA dehydrogenase)) carrying the plasmid pACYCop-adp1WS (where WS = ester synthase) under transcriptional control of the trc promoter (pTrcHisA2 plasmid) as the production host. Cells were cultured using the standard M9 fermentation protocol. A single colony or a scraping from a frozen glycerol stock was used to inoculate Luria bertani (LB) + appropriate antibiotics overnight pre-seed culture. Using a 1:100 dilution of the pre-seed culture, LB + antibiotics seed culture was inoculated. The seed culture was allowed to grow at 37 degrees C with shaking until OD600 was 1-2. The seed culture (2 ml) was then used to inoculate M9 media culture (20 ml) in 125 ml shake flask. These cultures were allowed to grow at 37 degrees C with shaking until the OD600 was 1 at which point the cells were induced with isopropyl- beta -D-thiogalactoside (IPTG) at final concentration of 1 mM and fed 2% final volume pure alcohol or a mixture of different alcohols; such as 2% final total volume of ethanol, a mixture of three alcohols (equal parts methanol, ethanol, isopropanol), or a mixture of four alcohols (equal parts methanol, ethanol, isopropanol, and propanol) at induction. The production host was allowed to process the alcohol(s) and media contents for an additional 20 hours post-induction at 30 degrees C before extracting with ethyl acetate. When analyzed by gas chromatography (GC)/mass spectroscopy (MS), the fatty esters corresponding to all four alcohols tested could be identified. The total titer of cultures fed with the 3-alcohol mixture (1156.84 mg/L) was higher than those fed only ethanol (945.34 mg/L). Cells fed all four alcohols had the lowest overall titer (670.09 mg/L). For both sets of cultures fed the alcohol mixtures, methyl esters were the most abundant fatty esters, followed by the ethyl esters or propyl esters. The results indicated that using a mixture of alcohols could boost the overall fatty ester titer over using ethanol alone (such as 1156.84 mg/L of total (for methanol, ethanol, and isopropyl alcohols) compared to (945.34 mg/L total (for ethanol alone)). In addition, the sum of the fatty acid methyl ester (FAME) and fatty acid ethyl ester (FAEE) titers was higher than the total FAEE titer for cells fed ethanol only (1079.11 mg/L versus 945.34 mg/L). Thus, it was apparent that the addition of methanol to fatty ester production process could result in synergistic and unexpected increase in the output of fatty esters. This also demonstrated the ability of production host to utilize alcohols other than ethanol to produce various fatty esters and to do so simultaneously.