Cold-pressed and expeller-pressed canola oil are also produced on a more limited basis. About 44% of a seed is oil, with the remainder as a canola meal used for animal feed. About 23 kg (51 lb) of canola seed makes 10 L (2.64 US gal) of canola oil. Canola oil is a key ingredient in many foods.
How did rapeseed oil work?
Attached to a canvas sea-anchor was another small punctured canvas bag that was filled with rapeseed oil. When the sea-anchor was streamed, especially in high seas, the wind and wave action would blow the boat downwind leaving the sea-anchor up to windward where the leaking oil would effectively smooth the approaching waves. oilnews
What is a Ghani oil press?
A ghani is a traditional Indian oil press, driven by a horse or ox.