With chenin blanc being celebrated on Friday, Thursday’s show raises several glasses to South Africa’s all-conquering varietal, and in some excellent company: Ken Forrester of Ken Forrester Vineyards, Bosman’s Corlea Fourie, Sebastian Beaumont from Beaumont, Attie Louw from Opstal, Joostenberg’s Tyrell Myburgh, and David Sadie from David & Nadia.