I've been researching flax seed oil. It's great nutrition; it's very high in omega-3 unsaturated fats, which are the very good kind. But it's hard to work with; it oxidizes - goes rancid - very quickly. People in the know say that the fresh oil, and oil that has been well tended, tastes delicous. But that a lot of the flax seed oil you buy has gone rancid already.
Along the way I found out that flax seed oil == linseed oil. Wow, I said. They use that for drying paint and finishing furniture. When I lived in Atlanta, they were doing furniture-finishing at the the house next door to me. It burned down. The cause was linseed oil-soaked rags, improperly stored. See, this stuff oxidizes so fast it actually can ignite. Any rags that have linseed oil on them should be placed in an old paint can, with a metal lid tightly closed.
So I've been wondering - if I use flax seed oil as a healthy salad dressing, can I get it to burst into flames at the table? I realize that this may alter the taste some, and the nutrient balance. But it sure would an attention-grabber at the next church potluck. What nontoxic thing could I do to speed up the ignition and make it more certain?