Private to Professor Snape
Last Christmas, we were asked what we wanted as presents from Santa Claus. As ridiculous as it may sound, we actually received what was on our wish list, at least most of us did. The point is, one of the things I asked for was a large stock of potion supplies. Even though potions were never quite my area of magic, I thought it would be useful for the Wizarding Community in Tumbleweed.
I can think of no better person to make use of these ingredients than you. None of the ingredients have been used, since they were left behind when we were taken on the cruise. If you would like them, you're welcome to have them. On the condition that they benefit all us Wizards.