Ann: Appendix 4D / Investor Presentation, page-8

Seeing as though Geoff is answering all of our questions, as a shareholder, I request clarification regarding the following query/riddle:

Lev is having a party with 1000 bottles of Rainrose wine. 1 month before the party, @kearneymaurice sneaks into the winery and poisons one bottle of wine with poison that will show no signs that the person is poisoned, but 3 weeks later they will drop dead instantly. Lev has 10 winetasters that are loyal enough to die testing the wine. Using these 10, how does Lev find the poisoned bottle of wine before the party?