"I thought that dress was lovely with Mrs. Campbell's silver hair, Susan.  And by the way, she wants your recipe for spiced gooseberry relish.  She says she had some at the Harvest Home supper and it was delicious."
-Anne of Ingleside, Chapter 32.

5 c gooseberries 
1 c brown sugar 
1 1/2 c raisins 
1 onion, peeled and sliced 
3 Tbs salt 
1/4 tps cayenne pepper 
1 tsp mustard 
1 tsp ginger 
1 tsp turmeric 
1 qt vinegar 

Chop gooseberries, raisins, and onion. Add other ingredients. Heat slowly to boiling. Simmer 3/4 hour. Stir frequently. Rub through coarse sieve. Reheat.

Thanks to ParkCornerPEI for the reference.