All of our wines are made naturally, meaning no use of inoculated yeasts or bacteria. We use only native yeast to spark fermentation. We do not add any powdered tannins or enzymes. A minimal dose of S02 is added 4 weeks before bottling to some wines. Pineapple, Acacia, Flint. Shell Creek Vineyard has sandy top soil and calcareous fossilized sea shells underneath.