India pale lager: brewing a hoppy lager for Indian drinkers

What the style is aiming for

An India pale lager, or IPL, should smell like a modern IPA and drink like a lager. That means bright hop aroma, firm but clean bitterness and a crisp, dry finish with none of the fruity esters an ale yeast leaves. Strength usually sits around 5.5 to 6.5% ABV and bitterness around 40 to 60 IBU.

It is not the same as a cold IPA, which typically uses a high-adjunct grist and is fermented warm with lager or ale yeast for speed. Our cold IPA guide covers that cousin. The IPL is a true lager, with the time and discipline that implies.

Grist and water

Keep the grist simple. Pilsner malt as the base, perhaps 5 to 10% Vienna or a light caramel malt for colour and a little body. In Indian conditions a share of rice or maize can sharpen the dryness. A mash around 64 to 65 °C favours fermentability and gives the dry finish hops need to shine.

Water should lean towards sulphate for a crisper bitterness. A sulphate to chloride ratio around 2:1 or higher suits most IPLs, built from RO water with gypsum and a little calcium chloride. Borewell water with high bicarbonate will push mash pH up and make the bitterness harsh, so treat it first.

Hops and bitterness

Choose hops for the profile you want. American and New World varieties give citrus and tropical fruit; German varieties such as Hallertau Blanc or Huell Melon give fruitier German notes; classic noble hops give a more restrained floral character. Bitter with a clean, high-alpha hop early, then put the bulk of the aroma hops in the whirlpool at around 80 °C, where isomerisation slows but oils stay in the wort.

Keep the bitterness firm but not harsh. With no fruity esters and little residual sweetness to soften it, bitterness reads sharper in a dry lager than in an ale at the same IBU. Many brewers aim slightly lower than they would for an equivalent IPA.

Fermentation and the dry hop

Pitch a healthy, generous dose of lager yeast, around 1.5 to 2 million cells per ml per degree Plato. Ferment around 10 to 12 °C. Free rise to around 15 to 16 °C near the end for a diacetyl rest. This is the stage most brewpubs rush. It is where IPLs go wrong.

The dry hop brings its own problem. Hops contain enzymes that break down unfermentable sugars, letting yeast ferment further. This hop creep raises alcohol slightly, can over-carbonate a sealed tank and often produces diacetyl after you thought the beer was clean. Our guide to hop creep explains the mechanism.

The practical answer: dry hop while yeast is still active, during or just after the diacetyl rest, so the yeast can clean up what the hops kick off. Check for diacetyl with a forced test (warm a sample to around 60 °C for 15 minutes, cool and smell) before you crash. Then lager cold, around 0 to 2 °C, for at least two to three weeks.

Oxygen and the cold chain

Hop aroma is fragile and lager flavours are delicate, so oxygen hurts an IPL twice. Purge the dry hop charge with CO2, minimise transfers and fill kegs or cans with low dissolved oxygen. In India, where delivery vans may run warm for hours, a hoppy lager loses its edge fast. Keep it cold from tank to tap and sell it fresh.

Why it suits Indian drinkers

The IPL sits neatly between the light lager that most guests know and the hoppy beers that craft drinkers ask for. It looks familiar in the glass, drinks crisp in the heat and carries enough aroma to feel special. For a brewpub, it can convert lager drinkers into craft drinkers without asking them to accept the sweetness or haze of a New England IPA.

The catch is time. An IPL needs a lager's tank time and an IPA's hop bill. Brewing one well depends on fermentation control, diacetyl management and dry hop timing all working together, which is where most of the craft lies.

Serve it at around 4 to 6 °C in a tall, clean glass with a firm head. Too cold and the hop aroma disappears; too warm and any fermentation flaws show. Carbonation around 2.5 volumes keeps it lively without filling the drinker up.