Sift together the flour, bicarbonate of soda, ginger and cinnamon and pour into the bowl of a food processor. Add the butter and blend until the mix looks like breadcrumbs. Stir in the sugar.
Rick Stein uses a food processor to whizz together the topping for his sticky damson cobbler – it's up to the oven to do the hard work. Spread the damsons over the base of a 2 litre/3½ pint ...