Cerulean City/Places of interest/Berry Powder man

In Pokémon FireRed and LeafGreen, there is a man in a cottage in the northern part of town who concocts a variety of medicines from Berry Powder and will exchange Berry Powder for herbal medicine and vitamins. When he is first visited, he gives the player the Powder Jar, and will ask the player to make some Berry Powder from the new machine that crushes Berries in the Pokémon Center upstairs. There is also a sign on his wall that keeps a record of pressing-speed ranking the player achieves.