Oakshire Naturals is a B2B company offering a vegan source of Vitamin D

From their website:

Oakshire Naturals, LP was created as the natural products division of Oakshire Mushrooms. Celebrating 30 years in business, the Oakshire Family has been a premium grower of specialty mushrooms since 1985 with the highest quality and freshest mushrooms in the industry.

When developing the brand, I decided I wanted to maintain continuity between this company’s brand with its parent company, Oakshire Farms.