where one lives and the water source makes a huge difference on the taste of ones mate.. as well as how the water is made hot. If it boils one has allready destroyed the water as it should only reach 90 not 100 degrees. Hard water makes mate less bitter , therefore in Uruguay especially they like argentinas most bitter mates due to the fact that the less bitter brands become bland quicly due to their water. So if Rosamonte works for you in California it does not mean that I will like in say Denmark. I here in Canada like Tranquera and Amanda when I can get it... the only brand I found to be junk all over is Cruz de Malta. And a mate should be really drunk out of a gourd mate with a bombilla and hot water around 80 t0 90 degrees in temp for the full taste and pleasure of a real Argie mate.