This is the 11089th most frequent Russian word.
голландское
"Голландское" means "Dutch" in English.
Here, 'голландского' describes the origin of the flax, indicating that it is from Holland.
Эта ткань сделана из голландского льна.
This fabric is made from Dutch flax.
In this sentence, 'голландское' is used to specify the kind or origin of the cookies, showing that they are typical of or produced in Holland.
Я купил голландское печенье в магазине.
I bought Dutch cookies in the store.
'Голландское' in this sentence qualifies the beer as being from Holland, indicating an attribute related to its quality or origin.