St. Marienthaler Klosterbrau Dunkel Bock
Privatbrauerei Eibau

 

From the Costco biergarten collection mixed 24-pack
500ml can poured into a Monkless tulip

P beautiful deep chestnut/mahogany w/ a 1-2f off-white head; looks great; med lace left behind
N med nose of sour graininess and a hint of dark fruit; not quite there, but verging on uninviting
T follows nose, but a touch better; lightly sour graininess, dark fruit, subtle grassy and earthy notes; a bit raisiny
Mf med bodied w/ med-high carb
O eh.. not terrible, but not great either; I typically really dig the style, but this one fell short imo

Review date: 11.21.25
Can date: not captured

Look:
Pours a deep brown with ruby and mahogany highlights when caught in the light. A creamy, tan head forms on top with respectable persistence, leaving light traces of lacing as it settles. Clear and polished, with a sturdy, traditional bock appearance.

Smell:
Rich malt leads the aroma, bringing dark bread crust, toasted grain, and a soft honey-like sweetness. Subtle notes of cocoa, nuttiness, and faint dried fruit sit underneath, with a gentle herbal presence adding balance rather than sharpness.

Taste:
Malt-forward from the first sip, showing layers of toasted bread, cereal grain, and caramelized sweetness. Hints of honey, cocoa powder, and walnut follow, along with restrained dark fruit tones reminiscent of raisins and dates. A mild bitterness keeps the sweetness in check as the flavor fades.

Mouthfeel:
Medium-bodied with a smooth, rounded texture. Carbonation is moderate, helping lift the malt without thinning it out. Finishes clean but still malty, with a soft lingering warmth.

Overall:
A solid and approachable dunkel bock that focuses on depth and malt character rather than bold intensity. Balanced, comforting, and well-suited for slow sipping, especially in cooler weather.

Attractive clear dark amber with a lasting head.
Medium carbonation with about a medium body
Aroma is malt, buckwheat honey and dark bread
Taste is a little sweet,malt,cereal,grain, honey and dark bread

 

Solid brown. Malty aroma and flavor with some nutty and light cocoa powder aroma and flavor. Decent balance but leans a bit sweet. Medium to light bodied.

 

Privatbrauerei Eibau i. Sa. GmbH "St. Marienthaler Klosterbräu Dunkel Bock"
500 ml can coded "P: 10/06/2025 E: 10/12/2026 15:46:21 11". Sampled on 05 November 2025
$59.99 / 24 can - Costco's Biergarten Collection, Costco, Christiana, DE

Notes via stream of consciousness: A very dark body is capped by a finger's width of khaki colored foam that's made up of both tiny and larger bubbles. In the nose it's fruity, darkly malty, and a little bit herbal. The flavor bears that out displaying an even greater breadth of malt. It's sweetish, bready, softly caramelish, lightly toasty, and cocoa powder-ish. The head has dropped at this point but it's still got a thin surface covering and there's lacing all about the glass where the head once stood. The fruitiness is mainly like apple although there's a hint of sweet red berry to it, and some dried dark skinned fruits as well (raisins, figs, dates) as well. The hops remain herbal and a touch floral. A moderate bitterness balances it and it finishes drying as it goes with some residual caramelish, nutty, and milk chocolate-like malt fading to eventually leave minor notes of fruit, toast, and herbs behind. In the mouth it's medium-full in body and crisp. I'm a little surprised at how carbonated it is as some of their beers are much softer, and that would seemingly work well in a bock but perhaps I'm wrong. The lacing has remained nice but the head retention should have been better, and I'm also surprised at how fruity it is. I personally don't mind it, but you don't expect it to be so strong in a bockbier.
Review #9,332

Dark brown pour with amber highlights, creamy khaki head. Nose is caramelized grain.

Taste brings cherry, light caramel, dark kilned malt, sweet walnuts. Mouthfeel is medium. Finish leans sweet and malty.

 

Poured from a can into a tulip glass.


Look: Dark brown. I cannot comment on the head because I made the mistake of pouring my beer to the brim of the glass.

Smell: Dark and semi-sweet. Almost leathery.

Taste: Dark malt flavor that finishes surprisingly sweet. It's rounding out by a helping of hop bitterness on the front end.

Feel: Rich with good carbonation

Overall: I like this quite a bit. This beer would be good while sitting in front of a warm fireplace and maybe eating some charcuterie.

Review: 2494
Name: ST Marienthaler Klosterbrau Dunkel Bock
Brewery: Privatbrauerei Eibau i. Sa. GmBh
Location: Eibau, Germany
Style: Dunkel Bock
ABV: 6.7%
Canned: 04 January 2025
Date: 12 October 2025
St M is the second beer from that Costco Germany pack. The beer is 10 months old and has a shelf life of one year, like the last one I consumed. I am using a pokal glass and serving the beer at 42 degrees. The pour created a frothy, creamy two-fingered light tan head with exceptional retention. The slow dissipation left chunks of lacing on the glass. The color is mahogany brown with a reddish hue; the clarity is semi-opaque, and the SRM is 24.
Nosing the beer, I detect notes of caramel, prunes, raisins, dark toasted bread, light char, with a light hop floral profile.
Sipping the beer, I taste toasted malts, light floral notes, raisins, earthiness, dates, caramel, breadiness, and light minerals, finishing with a bit of Maillard.
The mouthfeel is soft, finishing crisp and dry. The body is thin with medium carbonation.
Final Thought: I have mixed feelings about this beer. It is a solid Dunkel, but I wanted more depth in the flavors. The beer does have a light char/Maillard note on the backend. St. M is an average beer; it has potential for greatness.

In the past I have not cared for dunkel bocks, and I didn't care for this either. It has a rough feel and a malty and not pleasant taste. I did finish it but would not pick this again.

Part of the variety 24-pack 16.9oz cans Costco $59.99
276 days old
Smells faintly of caramel
Dark black-brown color
Medium mouthfeel
Medium carbonation
Taste of prunes, raisins, caramel
Overall an ok beer.

 

From the 2025 costco 24x variety box. Attractive in the glass, nice mouthfeel but not as flavorful as other examples of the style. Worth a try if you don’t see anything more compelling.

Clear dark red-brown brew with plenty of foam in the goblet. This has that "off" smell that is so detrimental to sweet wheat brews. It tastes like some bacteria found the residual sugar and are working behind the scenes to make it their own brew. Tastes of roasted grain and sweet caramel but also dishwater and a hint of sourness. The bitterness is starting to grow in this science experiment. From the 500 ml can dated 01/04/2025.

 

From the pint can in the 2025 Biergarten Collection from Costco, it pours a clear mahogany color with a nice off-white head that slowly reduces and leaves lacing. The nose gets a sweet scent of malt. The mouth follows with a sweet, malty, slightly caramelly, roasted malt brew that drinks easily.