“H-D’s made with chipolatas are also excellent”
Yup. They’re also very good made with proper German Bratwurst (many types thereof, inc. chipolata size) or any other wurst taking your fancy. The Käsekrainer variety is particularly good with tasty cheese lumps inside. Good chipolata size ones available in Waitrose! Almost all claim to have high pork or beef content, like 80 or 90%.