Koha operates in Marlborough, New Zealand's largest and most celebrated wine region, where cool-climate conditions shape wines of precision and intensity. The winery produces Sauvignon Blanc and Pinot Noir—two varieties that define the region's character. Marlborough's Sauvignon Blanc is marked by vibrant acidity and distinctive aromatics, while its Pinot Noir expresses the elegance and structure that cool-climate viticulture imparts. Both of Koha's flagship wines have earned recognition from Wine Spectator and Wine Enthusiast, reflecting their quality across the winery's core range.