Hi, I think the technique you are talking about is called
Mitsoro, it is in a book on wax techniques translated from a
school in Japan. You can get pine rosin at sports stores. Ask for
powdered rosin or a rosin bag. It is used by baseball players. Or
if you have any pine trees around collect the globules of sap
from the trunks of the trees. Not the best, there’s a lot of
impurities trapped in it. Win