Erwin Tomas, Jesus Delgado, and Eloy Garcia


Erosion is a local, family-owned, & operated, maker of deliciousness. Erosion started in 2019 under the ownership of Master Cicerone Patrick Rue. The Tap House opened in February 2020 solely as a wine tasting room. Then… well, you know what happened. After a delay from the pandemic, re-opened March 2021. Over the course of a year the tap room doubled in size with an adjacent tap room sporting a mirrored layout with an industrial design. The Erosion bottle shop remains open with over 350 beverage options with a finely curated beer selection.

Current Chapter

In May 2023 two formally employed locals, Jesus Delgado and Erwin Tomas, along with their brother-in-law, Eloy Garcia, joined forces to undertake a bold endeavor: the acquisition of Erosion Tap House. With their collaborative efforts, they work to propel Erosion Tap House to new heights. They’ve revamped the food and ice cream menu and most recently, introduced their new wine and beer membership, The Guild of Abundance.


We like to say Napa Valley wouldn’t exist without erosion.  In the course of 180 million years, Napa Valley went from being under the ocean, to a volcanic wasteland, to rock folding and pushing its way to create the beautiful Mayacamas and Vaca mountain ranges with the valley in between, to thousands of years of being eroded by water and wind.  The end result is a place of extraordinary diversity geologically speaking, and this is reflected in the quality and range of flavors that come from the wines grown and made here. Those alluvial fans underneath the most prized vineyards in Napa Valley? Yep, caused by erosion. Erosion is partly responsible for the diversity of flavors we’ll achieve in our creations.

Erosion also has a meaning from a cultural standpoint.  What we love doing is breaking the boundaries between different fermented beverages, giving ourselves the freedom to create flavors & experiences that perhaps otherwise wouldn’t exist.