German winemakers say this year’s grape harvest is forecast to be the lowest since 2017, with approximately 7.9 million hectolitres of must – the juice squeezed from the fresh grapes – forecast by an industry lobbying group. This would be about 10% less than the 10-year average of 8.8 million hectolitres and around 9% less than in 2023. The last time there was a similarly low yield was in 2017, with 7.5 million hectolitres, the German Wine Institute in Bodenheim said on Friday. The wine industry uses the hectolitre as its standard measure. It is equivalent to 100 litres. Late frosts, abundant …