Marmalade is tasty if it's very thickly spread

My dear father's memory, sight and hearing are all failing which is sad and frustrating for him. He manages well generally, nevertheless, and makes his own breakfast and lunch every day during the week, having learned to use a microwave aged 88. Muesli and toast and marmalade are his weekday breakfast, therefore, to make a change, I always cook him eggs at the weekend. On Saturday, however, horror of horrors, there were no eggs in the fridge. "Would you like smoked salmon on toast instead?" I asked. "Yes, that sounds very nice," he replied. I spread some butter on the hot toast, topped it with salmon and a squeeze of lemon, presented it to him and carried on making some for myself. "This marmalade is very good!" he said. "What did you say it is?"