Polyglycerol Polyricinoleate (PGPR), E476, is an emulsifier used in the making of chocolate. It is made from castor beans which help reduce the viscosity of chocolate allowing it to flow more easily when melted.

Commercial chocolate manufacturers use this emulsifier, also called polyglycerol polyricinoleate (PGPR) in the chemical form, as a cheaper replacement for cocoa butter in commercial-grade chocolate bars.

Polyglycerol polyricinate (PGPR) is a yellowish, viscous liquid composed of polyglycerol esters of polycondensed fatty acids from castor oil. It may also be polyglycerol esters of dimerized fatty acids of soya bean oil. It is an emulsifier used in chocolate, especially in Hershey's and Nestle chocolates. It is used to reduce the fat content of the chocolate. It is also used as a replacement for cocoa butter, which is an expensive raw material for chocolate manufacturers. Using PGPR instead of cocoa butter is a lot cheaper for chocolate manufacturers; PGPR is primarily used in cheaper chocolates.

Yes it is. Just, like Play D'oh, it's non-toxic and won't kill you soon enough to establish causality. It's has been added to chocolate bars in the last few years to replace cocoa butter, which is what makes chocolate, chocolate.

Milk chocolate (sugar, unsweetened chocolate, cocoa butter, milk ingredients, lactose, soya lecithin, polyglycerol polyricinoleate, artificial flavour), rice crisps (rice flour, sugar, modified palm oil, glucose, salt, calcium carbonate). Made on equipment that also processes peanuts/nuts. Contains traces of wheat gluten.