Garrison Brothers Ranch Reserve Bourbon Finished in Oloroso Sherry Casks Review

Distillers: Garrison Brothers Distillery

Proof: 110.0 (55.0% ABV)

Age: 8 Years (4 Years in American Oak + 4 Years in Oloroso Sherry Casks )

Mashbill: 74% White Corn, 15% Soft Red Winter Wheat, 11% Malted Barley

MSRP: $160

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A dry, earthy sherry-finished Texas bourbon that stays true to the whiskey underneath.

Garrison Brothers has never been a distillery that makes bourbon to be quite.  Instead, their bourbon is often aimed at making a splash in the market, and this Oloroso Sherry Cask Finished release does not appear interested in changing that approach.  This is a Texas straight bourbon built from food-grade white corn, soft red winter wheat, and malted barley, then aged for four years in toasted and charred American oak before spending another four years in Oloroso sherry casks from Spain.

That finishing period matters.  This is not a brief secondary finish meant to lightly season or simply layer a flavor into the bourbon.  Four years in Oloroso casks, in the Texas heat and humidity, is a serious second act.  And that creates the central question for this review: does the sherry cask deepen the bourbon, or does it overtake the whiskey that’s underneath?

Oloroso sherry tends to bring a drier, nuttier, earthier kind of influence.  Rather than pushing the whiskey toward sweetness, it can add dark fruit, old wood, tobacco, spice, and savory depth.  With this expression already a bold Texas style whiskey and at 110 proof, Garrison appears to be aiming for something deep, structured, and slow-sipping rather than soft, easy, or dessert-like.

What this bottle delivers is a bourbon-first experience with a sherry influence rather than the sherry covering up, or burying, the bourbon.  The Nose is clear and inviting, the Palate is where the whiskey really builds, and the Finish reinforces the dry, savory side of the Oloroso.  It is not flawless, but it feels intentional and well designed.

Garrison Brothers Ranch Reserve Bourbon Finished in Oloroso Sherry Casks Review: Tasting Notes

Nose – 4.4/5

Dry sweet corn. Rich caramel. Barrel char. Plum.
Strengths:  Clear notes.  Inviting.  Opens with dry sweet corn and barrel char.  Moves into richer caramel, malted cereal and a wine-cask earthiness.  Oloroso influence is present, but it does not take over the bourbon or push it aside.
Why It’s Not Higher:  For a whiskey with this much aging and finishing behind it, the Nose is more moderate than expansive.  Walnut, savory richness, and baking spice would normally be expected for an Oloroso secondary finish.  Those are faint or largely absent on the Nose.
Rating Justification:  Strong Nose because it fits within the whiskey’s intent.  Presents as deepened bourbon rather than an obvious sherry-finished bourbon, which works in its favor.

Palate – 4.8/5

Dry corn.  Wheat cereal.  Raisin bread.  Sour cherry.
Strengths:  Strongest part of the whiskey.  Begins with mild sweetness, oak, dry corn, wheat cereal, malted grain, barrel char, and raisin bread.  Deepens into wine-cask earthiness, sour cherry and dry oak spice.  Whiskey builds throughout the sip.
Why It’s Not Higher:  Very little to challenge here.  Nuttier side of the Oloroso influence remains somewhat restrained.  Walnut and pecan notes show lightly rather than becoming fully developed flavors.
Rating Justification:  Achieves the bottle’s intent exceptionally well.  Oloroso finish does not turn the bourbon sweet or wine-heavy.  It deepens the whiskey, adds structure, and gives the sip a dry, earthy richness while also allowing the underlying bourbon to remain clearly present.

Finish – 4.3/5

Barrel char.  Wine-cask earthiness.  Walnut.  Tobacco.
Strengths:  Reinforces the dry Oloroso identity.  Settles on the mid-Palate with char, earthiness, walnut, tobacco, and slight bitterness. The bitterness feels connected to the sherry influence rather than out of place.  Leaves a pleasant final impression and encourages another sip.
Why It’s Not Higher:  Medium length.  Fades, doesn’t evolve.  Supports the whiskey’s identity.  Does not continue building the way the Palate does.  The slight bitterness feels style-appropriate, but it also keeps the Finish from feeling especially polished.
Rating Justification:  Feels like it belongs to the whiskey and does its job well.  Excels in carrying the dry, earthy, savory character through the fade.  Does not feel flawed or disconnected, but it is not the highlight of the pour.  Medium length.  Limited evolution and instead it simply fades.

Value – 4.5/5

At $160, the Value must be judged against what this bottle is:  a high-quality Texas wheated bourbon given a long, serious Oloroso maturation and bottled at a proof that supports the whiskey without pushing unnecessary heat.

In that context, the price makes sense.  The base bourbon has enough weight to hold up to the secondary finish, the 110 proof feels right, and the Oloroso casks add depth without making the whiskey feel like a novelty.  This is not a cocktail whiskey, and a rock does not improve it.  In fact, dilution tends to pull the sour sherry note forward into the Finish.  This bottle is at its best neat.

For enthusiasts, especially those who already appreciate bold Texas bourbon and want to see what a drier, more savory sherry finish can do, this feels like good Value.

Garrison Brothers Ranch Reserve Bourbon Finished in Oloroso Sherry Casks Review: The Verdict

Garrison Brothers Texas Straight Bourbon Whiskey Finished in Oloroso Sherry Casks succeeds because the secondary finish feels integrated into the whiskey rather than placed on top of it.  This is not a bourbon that uses sherry casks to chase easy sweetness.

That is the key to this whiskey.  It still reads as Garrison Brothers first, bold, grain-forward, oak-influenced, and unmistakably Texas personality, but the Oloroso cask takes that foundation and bends it.  The Palate is excellent and easily the highlight of the pour.  The Nose is clear and inviting, though not as expressive as the Palate.  The Finish reinforces the whiskey’s identity.

This is an enthusiast pour, and it should be treated that way.  Drink it neat.  Take your time with it.  Do not expect it to behave like a soft or sweet finished bourbon.

Verdict – 4.5/5

We score each bourbon based on nose, palate, finish, and value.

Scoring System:

• Platinum – 4.5 – 5
• Gold – 4 – 4.5
• Silver – 3 – 4
• Bronze – <3