Mulled Perry (Pear Cider) with Pears and Spices

"Mulled Perry with Pears and Spices" from "Ripe: A Cook in the Orchard" by Nigel Slater.  I made 1/2 the recipe (0.5 litres, which was exactly enough for two glasses), though I only used 1/2 Tbsp brown sugar, increased the cinnamon sticks to two (so there would be one for both of us), used the juice from 3/4 of an orange, and added a tiny pinch of salt (just enough to bring out the flavors but not make it salty).  This drink is also nice with a bit of bourbon poured in.