Canvas white pigment and calcium carbonate is rather brittle and susceptible to cracking. As lead-based paint is poisonous, care has to be taken in using it. Various alternative and more flexible canvas primers are commercially available, the most popular being a synthetic latex paint composed of titanium dioxide and calcium carbonate, bound with a thermo-plastic emulsion. Many artists have painted onto unprimed canvas, such as Jackson Pollock, Kenneth Noland, Francis Bacon, Helen Frankenthaler, Dan Christensen, Larry Zox, Ronnie Landfield, Color Field painters, Lyrical Abstractionists and others. Staining acrylic paint into the fabric of cotton duck canvas was more benign and less
Dripping raw potato and cooking until potato turns brown. The cake will be the colour and texture of ghee. Pork or beef dripping can be served cold, spread on bread and sprinkled with salt and pepper ("bread and dripping"). If the flavourful brown sediment and stock from the roast has settled to the bottom of the dripping and coloured it brown, then in parts of Yorkshire it is known colloquially as a "mucky fat" sandwich. Dripping can be used to make pastry, for pasties and other foods. Dripping Dripping, also known usually as beef dripping or, more rarely, as pork dripping,