*'''Pajottenland:''' Sometimes written in English as ''Payottenland'', this extremely fertile agricultural region of Belgium is situated in a valley to the south-west of Brussels between the rivers Senne and Dendre and is cradle of lambic production.
*'''Pêche:''' French for ''peach''
*'''Pediococcus:''' A genus of gramGram-positive lactic acid bacteria. Can produce diacetyl in both Lambic and other foodstuffs, such as Chardonnay
*'''pH:''' The negative logarithm of hydrogen ion concentration. A measure of acidity, where lower is more acidic
*'''Pipe:''' A large wooden barre generally 550-650 liters in capacity; most often associated with the Port wine industry