Cartwright & Butler - Raspberry Preserve A homemade favourite, raspberry jam is full of flavour. Produced using a homemade recipe, our raspberries are used liberally in our traditional preserve. Great on a fresh scone with clotted cream. Established in 1981, Cartwright & Butler roots begin with the team making homemade jam and selling in a craft gallery. As popularity grew and they expanded their range, they are now committed to producing luxury, handmade products using quality recipes.