NOVELTY - Liquid product is produced which involves fermentation of a combination of biogas produced by the anaerobic digestion of high moisture organic feedstock (HMOF) and reformed natural gas (NG).    USE - The methods are useful for producing liquid product; and for producing alcohol product via syngas fermentation of reformed NG from NG reformer, biogas produced by anaerobic digestion, and tail gas that exits the fermentation (all claimed).    ADVANTAGE - The methods can generate a process fuel and a fermentation substrate at increased product yield and reduced cost by using high moisture, renewable feedstocks such as the organic fraction of municipal solid waste (OFMSW); biological waste sludge; source separated organics; green wastes such as food wastes (FW) from supermarkets and cafeterias; and other such plentiful, renewable sources such as certain agricultural wastes and even specifically harvested energy crops.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing an alcohol product via syngas fermentation of reformed NG from NG reformer, a biogas produced by anaerobic digestion, and a tail gas that exits the fermentation, which involves: (a) digesting HMOF in a digester to produce biogas; (b) passing a portion of the reformed natural gas with the biogas to the fermentation to produce the alcohol product and the tail gas; (c) passing portion the tail gas as fuel to the burners of the NG reformer; and, (d) passing natural gas to the burners of the NG reformer to supply the remainder of the necessary fuel for the NG reformer; or a method for producing an alcohol product via syngas fermentation of reformed NG from NG reformer, a biogas produced by anaerobic digestion, and a tail gas that exits the fermentation, which involves: (a) digesting HMOF and excess biosolids from the fermentation in a digester to produce the biogas and a digester digestate stream and reforming the biogas in a non-catalytic partial oxidation reformer to produce a reformed biogas; (b) passing portion the reformed natural gas with the reformed biogas to the fermentation to produce the alcohol product and the tail gas; (c) passing portion the tail gas as fuel to the burners of the NG reformer; (d) passing NG to the burners of the NG reformer to supply the remainder of the necessary fuel for the NG reformer; (e) separating water from the digester digestate stream to produce a liquid digestate stream and a solids digestate stream and the liquid digestate stream passes through a filtration system that includes a tight UF membrane to produce a retentate stream and an ultra-filtered water stream that passes to the fermentation; (f) portion the solids digestate stream is dewatered, dried and passes to a gasifier to produce syngas that passes to at least one of the fermentation, the burners of the NG reformer and an ash that contains trace metals; and (g) portion the ash is treated with citric acid to leach the metals into a solution of trace metals and citric acid that pass to the fermentation as a solution to provide both the trace metals and citric acid to the fermentation.