Reply To: Question about Using Old Kimchi Filling to Make Fresh Kimchi

By “kimchi filling” you mean kimchi paste? You should have frozen the leftover kimchi paste if you wanted to use it for next batch.
Your 5 month old kimchi paste in the fridge was well fermented in the fridge! You made kimchi paste kimchi! : )

You can eat it alone as a side dish or experiment by adding it to your dishes. But it’s not a good idea to mix old kimchi with freshly made new kimchi.
Kimchi tastes different at each stage from fresh kimchi to aged kimchi. If you mix fresh kimchi with fermented sour paste, the taste won’t be right.