With the Seville orange crop in doubt, as reported by the Observer, I suggest that all we marmalade makers in our 80s turn now to crab apple jelly. My tree has produced a good crop of little, yellow fruit, which becomes a slightly sharp, clear, pink jelly. It is excellent on toast and is the easiest jam to make as it sets very easily every time.
Michael Harrison
Oxford
• Your article (‘The more dangerous the operation, the more I wanted to do it’, 5 October) says Henry Marsh “pioneered a type of neurosurgery in which the patient is awake”. As a student nurse, I watched Prof Norman Dott practise this type of surgery in 1957 at Edinburgh Royal Infirmary.
Sheila Graham
Hamilton, South Lanarkshire
