How much would i need to buy?

okay. so i've finally got myself a good contact, and i was gonna buy some shake/schwag to make brownies or something for a friend.
My question is: how much shake/shwag would i need to get to make some semi-potent brownies using about 110grams (nearly 4 Oz) of butter? making the butter first and then using it in the the brownies, obviously.
Thanks in advance.
~GTH

I'd figure 1 or 2 grams of weed per serving of finnished product. So see how many servings it makes and how much butter it takes. Got a friend that warms up some butter and schwag a gram or 2 then makes rice o roni and eats it and is high all day.

the recipe says it'll serve 6/8 people. so if i were to cut it to serve 6 people i'd need about 12 grams maximum. like i said before it'll be 110g butter. that's *goes to google* 3.8 Oz. that right?

just looking at the recipe again. it says it makes 15 brownies.