Truffles advice - simple for those that know!

Morning wherever you are,

Having taken mushrooms a few times and loved it, the one time I tried truffles I never took enough and felt 0. I now know that there is a big difference between both and it was my fault.

My question: what sort of dosage of truffles is needed to be on par with a 5g dosage of mushrooms?

FWIW: I am based in a country where they are legal.