Good matcha from a tea shop in my town

Yesterday, we had another tea lesson. When I was placing matcha into natsume, I noticed that the aroma of matcha was richer than usual. I find a smell like seaweed in the matcha. It’s probably similar to the aroma that gykuro has, and I think it comes from umami. Our master usually buys matcha for the lessons once or twice a month. Yesterday's matcha was new one. It may be fresh grinded one at the store. The taste was very good. We thought it was better than usual, and loved it. I think fresh is better for matcha, and it's better to buy fresh matcha little by little from store.
Our muster buys it from a small shop in our town, called Kokaen. They have tea gardens and produce matcha in Nishio, or the tea garden owns Kokaen. I’m not sure. Anyway, Nishio in Aichi prefecture is one of the biggest matcha production regions in Japan. I think this outlet shop form Nishio tea farm sells good quality matcha.