Northdown hops in English porters and stouts

Northern Brewer with better disease resistance

Northdown was bred at Wye College in Kent and released in 1970. Its parents were Northern Brewer and a male with resistance to downy mildew. Growers got a hop that held up better in wet English summers.

Brewers got a reliable dual purpose variety. Alpha acid usually runs from 7 to 10%. The aroma leans woody and resinous, with cedar, pine and some berry and spice. The bitterness is generally considered smooth for its alpha.

Why it suits dark beer

Roasted malts bring their own bitterness and acidity. Black malt and roasted barley at 5 to 10% of the grist add a dry, coffee-like edge that stacks on top of hop bitterness. Pair that with a harsh hop and the beer turns acrid.

Northdown's cleaner bitterness sits under roast without fighting it. Its cedar and pine notes add depth that reads as part of the dark malt character rather than as a hop statement. That is why it turns up in porters, stouts and strong dark ales across England.

A hop schedule for a 1,000 litre porter

Say you are brewing a 1,000 litre London-style porter at OG 1.052 and want 32 IBU. At 28% utilisation for a 60 minute addition and Northdown at 8.5% alpha:

grams = 30 x 1,000 / (0.085 x 0.28 x 1,000) = about 1,260 g for 30 IBU.

Add another 300 g at 10 minutes. That brings around 2 to 3 IBU more and a soft woody aroma. Most porters do not need a dry hop. If you want one, 1 g per litre of Northdown for three days adds a resinous lift without turning the beer into a hoppy porter.

The floor detail: roast bitterness moves your target

When you build a dark beer, remember that IBU calculators only count hops. Roasted barley at 7% of the grist adds perceived bitterness that no calculator sees. A stout designed at 40 IBU with heavy roast can taste harsher than a pale ale at 50.

In practice, many brewers drop the hop IBU by 5 to 10 when roast malt rises above about 8% of the grist. Brew it, taste it against your target and adjust the next batch. Keep the roast grain bill and the hop bill on the same brew sheet so the link is obvious.

Northdown in pale beers too

Northdown is not only a dark beer hop. In an ESB or strong bitter it gives firm bitterness and a slight woody note that suits caramel malt. It was a common choice for English bitters when growers were moving away from older varieties.

It is less suited to bright modern pale ales. The cedar and resin can feel dull next to citrus and tropical hops. Save it for beers where English character is the point. Our guide to English hops sets it beside its relatives.

Sourcing and swaps in India

English hops reach Indian breweries through importers, usually as T90 pellets. Order with the season in mind. English hops are harvested in late summer, so fresh crop pellets usually arrive months later after processing, shipping and clearance. Ask for the analysis date with every lot and store cartons frozen.

If Northdown is unavailable, Northern Brewer is the closest swap. Challenger works with a slightly more marmalade character. Target can bitter in a pinch, with less late hop to avoid its herbal pungency.

Stouts are not porters with more roast

For a dry Irish-style stout, the hop plan is simpler still. Most of the bitterness comes in one early addition, often 30 to 45 IBU, with little or no late hop. Roasted barley at around 10% of the grist provides the dry, coffee finish. Northdown works well as that single bittering charge because its clean profile does not add a second layer of harshness on top of the roast.

For a stronger export or foreign extra stout at OG 1.060 or higher, gravity lowers hop utilisation. Expect to need 10 to 15% more hops than the same IBU in a normal strength beer. Check your calculator handles gravity. Many basic ones do not.

Yeast and hop pairing for dark ales

Hop choice is half the story in a porter. An English yeast with moderate esters adds dried fruit notes that make the woody hop character feel richer. A very clean yeast gives a drier, more roast-forward beer where hop bitterness stands out more. Our comparison of English ale yeast strains helps you choose.

Designing a dark beer on purpose, balancing roast acidity, hop bitterness, yeast esters and residual sweetness, is grist and recipe design work. That is a skill worth learning properly.

Common questions

What does Northdown taste like?

Cedar, pine and resin with some berry and spice. Its bitterness is clean for its alpha, which suits dark malt.

What is the alpha acid of Northdown?

Northdown usually tests between 7 and 10% alpha acid. Use the lot analysis rather than a typical figure.

What is the best substitute for Northdown?

Northern Brewer is the closest. Challenger works too, with a slightly different, more marmalade-like character.