Add a little sugar to taste when heating it. If you want it cold just chill after opening and heating. I prefer it cold although its good hot. We tried this years ago and it came out wrong. Blech wrong. Really salty.

We do have good luck with canning cole slaw. The recipe used was too sweet. Then we found we could reduce the sugar by 75% and it tastes great. Amazingly the cabbage is still some what crisp after hot water bath canning.