Martins de Sá Tawny Port Bottling Note Martins de Sa' Tawny Port is bottled in Portugal at 19% ABV, after being aged in the classic tawny style - which means the use casks instead of large tanks or bottles favoured with other port types. This maturation process, combined with the use of wines selected for their smooth and mellow character, gives a silky, subtle body that just screams sangria - or is that just me? Martins de Sá White Port Bottling Note Martins de Sá White Port may well be the Portuguese brand's secret weapon, seeing as how white port is supposedly the latest drinking craze in the UK. Bottled at 19% ABV in sunny Portugal, Martins de Sá White Port may not carry the same deep, brooding reds of more classic port types, but that doesn't stop it delighting in citrusy, rich, white grape. White ports are of two varieties, dry and sweet, and the Martins de Sá White is a pinching sweet effort that reveals itself best when served with tonic and crushed ice.