Grams to Teaspoons doesn't convert.
The best bet is to wait for someone here who has paradise and a blade scale, measure your 4 grams, and then figure out how many teaspoon scoops it took. Good luck!
Also,
If you have the original untouched package, and it says something like "1 oz" for example, you can convert that to 28grams, and cut it into 7 equal sections (like that famous powdery drug) and boom you have apx 4 grams of paradise.
And if you have 2grams. I can just see what you have and double or increase as needed. That's what I'm looking for through. What does your 2 grams fill as far as measuring spoons lol.
First there's tons of conversion calculators; online, apps, etc.
Secondly how small of a batch is this? 4 grams isn't likely to make much of a difference unless it's like a 1 gallon batch.
1 oz is about 28 grams. So you're looking at about 1/7 (or .14) of an ounce! My bittering hops in my 9 liter (2.3 gallons) batches weigh out to be more than that!
4 grams will most certainly make a difference in a 5 gallon batch. Grains of paradise are potent that's why most packages only sell in 2 gram increments. 4 grams will have a very noticeable spicy character.
hahahaha, i just looked up grains of paradise... completely not what i thought. i was thinking some kind of specialty grain and wondering how 4 grams was going to make any difference whatsoever...
i would just google search for "how much grains of paradise in homebrew."
somebody didn't read the entire thread...