Serious Saffie Sauvignon and a top Champagne

Two very impressive wines today, a relaxed family Boxing Day. First, a remarkable South African Sauvignon Blanc. Second, a lovely Champagne.

Kumkani Lamner Hill Sauvignon Blanc 2007 Groenekloof, South Africa
This is amazing stuff. Weighing in at 14.5% alcohol and with immense concentration, it's a serious Sauvignon from a vineyard whose climate is moderated by the fact that it's just 7 kms from the Atlantic ocean. It has a powerful green grassy, herbal nose with green peppery notes. On the palate there's tropical fruit/passion fruit richness balanced nicely by the powerful grassy methoxypyrazine character. Not at all subtle, but a serious, striking wine. 92/100 (£11.99 Majestic, £9.99 each if you buy two)

Mumm de Cramant Grand Cru Champagne Brut Chardonnay
12% alcohol. This Grand Cru Blanc de Blancs is beautifully precise with crisp lemont fruit and nice herb and apple complexity. It's concentrated and intense with lovely fruit expression. Quite dry and savoury - this has a lower dosage (sugar addition) than is normal for Brut Champagne. A brilliant effort. 93/100 (£43.99 Thresher, Harrods, Ocado)