Osa Major Wines is a small production winery founded in 2020 by Berkeley-based winemaker Emily Fernwood, crafting classic, site-driven wines from organically farmed vineyards across California. The wines emphasize native fermentations, gentle handling, and little to no added sulfur, resulting in joyful, fresh, balanced expressions of California's diverse geology and historic regions. Blending modern ideas with old world techniques, the focus is on minimal manipulation and showcasing the purity of the grapes.

Small production wines from unique California vineyards Native fermentations, gentle handling, little to no added sulfur Syrah, Carignan Site-driven, organically farmed grapes
Hero splash image Winemaker Emily Fernwood in vineyard Wine product image
Arcturus Rosé
A refreshing rosé with strawberry and melon notes, perfect for summer sipping.
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Canopus Pinot Noir
Elegant and earthy with cherry, raspberry, and subtle oak undertones.
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Polaris Chardonnay
A crisp, unoaked Chardonnay with bright citrus and green apple flavors.
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Ursa Red Blend
A bold blend of Cabernet Sauvignon and Syrah with notes of blackberry, plum, and a hint of spice.
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Vega Syrah
A full-bodied Syrah with dark fruit, pepper, and a smoky finish.
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Bronze Medal, San Francisco Chronicle Wine Competition 2022 2022
Silver Medal, California State Wine Competition 2021 2021

Vintage 2024 celebrates heritage sites all over the state - a hands-off, laid back interpretation of new California classics.