Buying specialty malt in small quantities as a brewer in India

Why small lots are a real problem here

A brewpub making 500 litre batches might use 2 to 5 kg of a given crystal or roasted malt per brew. Most imported specialty malt is packed in 25 kg sacks. If a malt goes into one seasonal beer, a full sack can last a year or more.

That would be fine in a cool, dry climate. In Mumbai or Chennai during the monsoon, an opened sack picks up moisture from the air within weeks. Crystal malts soften and lose their crunch, roasted malts go flat and the whole lot becomes attractive to weevils. You end up paying import prices for grain you throw away.

Where small quantities come from

There are three practical routes. Most brewers use a mix of them.

• Distributors who repack. Some Indian malt importers and homebrew suppliers split sacks into 1 kg, 5 kg or 10 kg bags. Ask when the sack was opened and how the repacked bags are sealed. A heat-sealed foil or thick poly bag is far better than a knotted plastic one.
• Sharing a sack. Two or three breweries in the same city split a 25 kg sack of an unusual malt. This works well for once-a-year malts like smoked or special caramel types.
• Buying full sacks of the malts you use every week. Your house crystal malt in a flagship amber turns over fast enough to justify a full sack.

Before you plan a recipe around a rare malt, check whether you can get it again. A seasonal beer that sells well and then cannot be rebrewed is a common and avoidable headache. Our guide to sourcing malt and hops in India covers the wider supply picture.

Check every bag when it arrives

Small, repacked lots carry more risk than sealed sacks from the maltster, so treat each one as suspect until it passes.

• Ask for the maltster's certificate of analysis or at least the lot number, so you can match the bag to a spec sheet. Our guide to the malt certificate of analysis explains what each line means.
• Bite a few kernels. Crystal malt should be glassy and crunchy, roasted malt brittle. Chewy kernels mean moisture pickup.
• Smell the bag. Musty, damp or cardboard notes mean reject it.
• Look for webbing, live insects or fine flour at the bottom of the bag.

Most specialty malts leave the maltster at low single-digit moisture, typically well under 5%. You will not have a moisture balance in a small brewpub, so the bite test is your instrument. It is surprisingly reliable once you have tasted a few fresh samples side by side with an old one.

Storing a part-used sack in Indian weather

Once a sack is open, the clock runs. Fold the top down, squeeze out the air and clip it, then put the whole sack inside a food-grade drum with a gasketed lid. A 60 or 100 litre HDPE drum holds most of a 25 kg sack and costs far less than the malt it protects.

Keep the drums off the floor on pallets, away from the brewhouse steam and out of direct sun. An air-conditioned store room is ideal if you have one. Write the opening date on the drum with a marker. Use opened specialty malt within about two to three months in the monsoon. In the dry winter months you have more slack.

Never store crushed specialty malt. Crushing exposes the starchy interior. Crushed grain stales in days in humid air. Mill on brew day only.

Plan recipes around what you can buy

A small brewery does better with a short, deliberate list of specialty malts than with fifteen half-used sacks. Many good beers need only three or four: a pale crystal, a darker crystal, a chocolate or roasted malt and perhaps a Munich or melanoidin type for depth.

Design the house portfolio so those malts are shared across several beers. Your crystal 60 might go into the amber, the ESB and the porter. That keeps stock moving and every bag fresh.

This is where grist design matters. Knowing how to hit a target colour and flavour with a smaller malt list, instead of reaching for a new sack every time, is a skill built on understanding what each malt contributes. Our guide to crystal and caramel malts is a good starting point.

When the malt you want is out of stock

Imports run late. When your usual malt is missing, substitute by colour first and flavour second. A crystal malt of similar EBC from another maltster is usually a fair swap. A roasted barley is not a straight swap for chocolate malt, because roasted barley brings a sharper, drier bitterness.

Run the substitute in a small batch or adjust the percentage down slightly on the first brew. Then taste the result next to the previous batch before calling it a permanent change.