Saffron in beer

Three compounds do three different jobs

Saffron is the dried stigma of the saffron crocus. Its character comes from three groups of compounds. Crocin gives the golden yellow colour and dissolves readily in water. Picrocrocin gives a faint bitterness. Safranal, formed as the spice dries, gives the honeyed, hay-like aroma people recognise in kesar milk and biryani.

In beer, each behaves differently. Colour arrives easily, even from a small dose. Aroma is volatile and fades with heat and time. Bitterness only shows if you overdo it. Then it tastes medicinal. A good saffron beer is lightly golden, gently floral and never bitter from the spice.

Buy genuine saffron and check it

India's best known saffron comes from the Pampore area of Kashmir and carries a geographical indication tag. Iranian and Spanish saffron is also widely sold. Grade matters: saffron is graded under the international standard ISO 3632, with Category I the highest for colour and aroma strength. Reputable sellers print the grade.

Adulteration is common. A simple home check: drop a few threads into a glass of cold water. Real saffron slowly releases a yellow-gold colour over several minutes while the threads stay red. Threads that bleed red at once, or turn pale, are likely dyed. Real threads also feel dry and brittle, never oily.

How little you need

Saffron is strong. For a 20 litre batch, start with 0.1 to 0.3 grams of threads. That is roughly 50 to 150 threads, a small pinch. At 0.2 grams you will see a clear golden tint in a pale beer and smell the spice on the nose. Beyond about 0.5 grams for 20 litres, many beers turn bitter and medicinal.

Buy a sealed 1 gram tin and a jeweller's scale that reads to 0.01 grams. Kitchen scales cannot weigh this accurately. The one floor detail that saves money: weigh the threads, never count by eye. Two pinches from different hands can differ threefold.

Steep it before it goes in

Saffron releases colour and aroma best when it is steeped first. Lightly crush the threads, then soak them in about 50 millilitres of warm water, around 60 to 70 °C, for at least 20 minutes, or overnight in the fridge. Some brewers use a little vodka instead, which extracts the aroma well and keeps the infusion clean.

Add the infusion, threads and all, at one of two points:

• At flameout or in the whirlpool for strong colour and a softer aroma.
• After fermentation, at packaging, for the freshest aroma.

A split works well: half at flameout for colour, half at packaging for scent.

Beers that suit saffron

Saffron needs a pale, clean base with little hop or roast to hide behind:

• A Belgian blonde or tripel, where honeyed yeast esters meet the spice.
• A pale wheat beer or witbier, with cardamom in place of coriander for a kesar-elaichi feel.
• A light lager or Kölsch-style ale.
• A honey ale, where both bring the same floral sweetness.

Our guide to brewing with Indian spices covers cardamom and other partners. Avoid pairing saffron with intense citrus or resinous hops. They drown it.

Pairing saffron with Indian food and other spices

Saffron already has a place on the Indian table, which makes it an easy beer to explain. A saffron blonde sits naturally beside biryani, kesar pista kulfi or a Kashmiri wazwan spread, where the spice in the food meets the spice in the glass. That echo is the point. You are not trying to out-shout the dish, only to repeat one note in it.

Saffron's best partners in the fermenter are cardamom, a little rose water and honey. Use each with more restraint than you think. Green cardamom at 2 to 4 grams for 20 litres, crushed and added at flameout, is plenty alongside saffron. Rose water is very strong: a few millilitres in 20 litres, added at packaging and tasted first. Honey added after fermentation adds floral aroma with little sweetness, because the yeast eats almost all of it.

Leave out cinnamon, clove and star anise. They are lovely in a winter ale but they flatten saffron's delicate scent.

Saffron in the Indian cellar

Heat, light and humidity all degrade saffron. Keep the tin sealed, dark and cool, ideally in the fridge in an airtight container. Use it within a year. Old saffron loses aroma before it loses colour, so a beer brewed with stale saffron can look right and smell of nothing.

The finished beer is fragile too. Light and warm storage dull the colour and scent. Package it in brown bottles or cans, keep it cold and drink it fresh. A saffron beer is not one to age.

Balancing an expensive ingredient

Saffron rewards restraint. The aim is a beer where someone says it smells faintly of something lovely, not one that tastes like a spoonful of the spice jar. Getting there means judging the base beer, the yeast and the spice as a whole. That balancing work is the heart of speciality brewing.

Your first step: buy one gram of graded saffron, steep 0.05 grams in a little warm water, then dose a 500 millilitre glass of pale beer drop by drop until you like it. Scale that up to your batch.

Common questions

How much saffron goes into 20 litres of beer?

Start with 0.1 to 0.3 grams of threads, weighed on a scale that reads to 0.01 grams. More than about 0.5 grams often turns the beer bitter.

How can I tell if saffron is real?

Drop a few threads into cold water. Real saffron releases yellow colour slowly while the threads stay red. Threads that bleed red at once are probably dyed.

When should I add saffron to beer?

Steep it in warm water first, then add it at flameout for colour or at packaging for the freshest aroma. Many brewers split the dose.