Yellow Grease
Yellow grease is waste cooking oil from restaurant fast food fryers. It is a marginally valuable commodity [blank] to its use as an additive in animal feeds and cosmetics, but it can only be sold if it [blank] a certain standard. In the past, a lot of yellow grease went to waste, to the [blank] that restaurants had to pay for it to be taken away. This was [blank] for home-brewers like Kevin Newman, who picked up gallons of grease from their local fast food outlet and turned it into clean fuel at a cost of about $1 a gallon.
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