Hazelnuts
Cobnuts (Hazel) grow particularly well in Scotland. Varietal forms are selected for being 'prolific nutters' and will in due course produce an abundance that not even the hungriest squirrel could clear, so plenty of nuts for Christmas. They can even store until the following winter. Some of these varieties are partial self-fertile but all benefit from pollination from a different variety. All the below are compatible with each other.