Henderson's Relish - to be found in almost every kitchen cupboard in Sheffield!
Worcestershire sauce - No way - Has to be Henderson's. Also we had no worries during the recent Sudan 1 scare.
A 'must have' accompaniment for meat'n tatie pie and mushy peas. Mmm.
I would be interested to know if anyone outside Sheffield has heard of it.
More info can be found at http://www.hendersonsrelish.com
Update for our friends outside the UK - Mushy peas are dried marrowfat peas which have been soaked overnight and then boiled.
Sound awful don't they but they're delicious. Also served traditionally with fish and chips.