This is a common question by foreigners used to standardised portions of weed. In a cannabis club you shouldn’t worry about the portions, as you can get the amount you wish.
There is no minimum purchase limit in clubs, so you can easily buy only a very small portion. Unlike grocery shopping, there is no pressure to buy more weed than you can enjoy at the moment. If you just want one puff, you can ask for the exact amount for only one puff. This is also important because you’re not allowed to buy weed to go without legal consequences.
The maximum quantity you can buy is related to the monthly limit. A person can get a maximum of 100g of marijuana in a month, so it is not possible to use more than that in a month when visiting a club. In case a big amount of weed is requested, the club staff may refuse giving it to you and reduce your limit if they think it is justified.
50g weed and 50g cannabis resin
The mentioned 100g monthly limit is a sum of weed and resin. Club members can receive up to 50g of weed and 50g of cannabis resin per month.
This monthly limit means a daily consumption of over 3g of marijuana, which is a satisfying amount.
All in all, according to the law, the club members can get up to 100g of weed no more than that.