Cookie butter jams. For the jam, apricot or raspberry is the preferred ingredient. Cookie butter Cookie butter (Dutch: "Speculoospasta", Danish: "Trøffel-masse") is a food paste made primarily from speculoos cookie crumbs (known as Biscoff in the USA), fat (such as vegetable oil, condensed milk or butter), flour, and sugar. The ingredients are mixed until it becomes spreadable on a sandwich. In countries like Belgium, the Netherlands, and France, it is a common alternative to nut butter and chocolate spreads. The most common brand name is Lotus Bakeries. In 2007, two individual inventors took part in a Belgian TV inventor show, called De
Vegetable oil fuel help to provide longevity. Ideally the engine would be converted. The relatively high kinematic viscosity of vegetable oils must be reduced to make them compatible with conventional compression-ignition engines and fuel systems. Cosolvent blending is a low-cost and easy-to-adapt technology that reduces viscosity by diluting the vegetable oil with a low-molecular-weight solvent. This blending, or "cutting", has been done with diesel fuel, kerosene, and gasoline, amongst others; however, opinions vary as to the efficacy of this. Noted problems include higher rates of wear and failure in fuel pumps and piston rings when using blends. When liquid fuels made from biomass