Barleywine

Opus Aeternum: The Neverending Boil

Soul Barrel Brewing Co. · South Africa · Western Cape

Opus Aeternum: The Neverending Boil is a barleywine brewed by Soul Barrel Brewing Co. in Western Cape. It has an alcohol by volume (ABV) of 17.5%. An extreme barrel-aged barleywine boiled for over 20 hours across six days and aged in a bourbon barrel for over a year.

High confidence· officialLast checked: 2026-05-10

Nutritional information

MetricValue
Alcohol by Volume (ABV)17.5%
Available serving sizes330 ml, 440 ml

About Barleywine beer

This Barleywine showcases the brewer's interpretation of the style with unique local ingredients and techniques.

How to serve Opus Aeternum: The Neverending Boil

For the best experience, serve Opus Aeternum: The Neverending Boil at 5–8 °C in a clean pint glass. Pour with a steady tilt to build a firm head, which helps release the aromatics typical of the barleywine style. In South Africa it is commonly sold in 330 ml, 440 ml formats. It pairs naturally with a classic South African braai and hearty, savoury dishes.

How strong is Opus Aeternum: The Neverending Boil?

At 17.5% ABV, Opus Aeternum: The Neverending Boil sits firmly in the high-strength category. A single serving delivers roughly the amount of pure alcohol shown below — useful for pacing yourself and staying under South Africa’s 0.05% blood-alcohol driving limit.

ServingPure alcohol
330 ml46 g
440 ml61 g

Enjoy responsibly. Not for sale to persons under the age of 18.

Frequently asked questions

What is the ABV of Opus Aeternum: The Neverending Boil?+

Opus Aeternum: The Neverending Boil has an alcohol by volume (ABV) of 17.5%. It is brewed by Soul Barrel Brewing Co. in Western Cape.

What style of beer is Opus Aeternum: The Neverending Boil?+

Opus Aeternum: The Neverending Boil is a Barleywine brewed by Soul Barrel Brewing Co.. This Barleywine showcases the brewer's interpretation of the style with unique local ingredients and techniques.

Who brews Opus Aeternum: The Neverending Boil?+

Opus Aeternum: The Neverending Boil is brewed by Soul Barrel Brewing Co., based in Western Cape, South Africa.

More from Soul Barrel Brewing Co.

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