Yes, you can mix the Bokashi mass and potting mix and let it sit to decompose for at least one month.
In principle, it is possible.
We suggest that you:
- Put one-third of the soil on the bottom.
- Then, put one-third of fermented mass mixed with a bit of soil.
- Cover it with one-third of the soil again.
- Press it down firmly and let it sit for at least one month to decompose.
- After one month, you can check if it already decomposed and if not, you could let it sit for a while more.