Plymouth Gin gin, purportedly due to a higher than usual proportion of root ingredients, which bring a more 'earthy' feel to the gin as well as a softened juniper flavour. There is also a 'navy strength' variety which is 57% ABV (100° English proof), being the traditional strength demanded by the British Royal Navy. <ref name="http://www.plymouthgin.com"></ref> A 47% ABV (94 U.S. proof) version is distributed worldwide. Plymouth also produces a sloe gin, but has discontinued its Fruit cups and Damson liqueur. Gin, originally being a relatively cheap alcoholic beverage, was bought by the poor and caused considerable social problems, illustrated by the
Flavour (particle physics) basis to the flavor-eigenstate/mass-eigenstate basis for quarks underlies the Cabibbo–Kobayashi–Maskawa matrix (CKM matrix). This matrix is analogous to the PMNS matrix for neutrinos, and quantifies flavour changes under charged weak interactions of quarks. The CKM matrix allows for CP violation if there are at least three generations. Flavour quantum numbers are additive. Hence antiparticles have flavour equal in magnitude to the particle but opposite in sign. Hadrons inherit their flavour quantum number from their valence quarks: this is the basis of the classification in the quark model. The relations between the hypercharge, electric charge and other flavour quantum numbers hold