That awkward moment when someone shows up uninvited to a dinner party – do you let them in and embrace their presence or politely remove them from the dinner table? If you are a wine lover you have most likely come across a bottle of wine that has some level of Brett infection but is this shoddy winemaking or just terroir? By covering the basics of winemaking and focusing on the powerhouses of fermentation, let’s look at good, the bad and the ugly yeasts involved in vinification and what they bring to the table.