There is something deeply satisfying about brewing with ingredients you have gathered yourself. For Scottish home brewers, heather ale offers a direct connection to the landscape – a chance to capture the moors in a glass. But not all heather is the same. The two species you are most likely to find on a hillside walk, bell heather and ling heather, behave very differently in the kettle. Choosing the right one, and using it well, is the difference between a pint that sings of the glens and one that tastes like a mouthful of potpourri.

Understanding Your Heather Options

In Scotland, two heathers dominate the uplands. Ling heather (Calluna vulgaris) is the classic purple carpet you see on grouse moors from late summer into autumn. Its flowers are small, bell-shaped and tightly packed along the stem. Bell heather (Erica cinerea) is a different beast altogether. It blooms earlier, often from June to August, with larger, more rounded bells in deep magenta, crimson or purple. Bell heather tends to grow on drier, rockier slopes, while ling prefers the wetter, peaty ground. Both are used in traditional heather ales, but they bring distinct qualities to your brew.

Bell Heather: Intensity and Spice

Bell heather is the bold one. Its flowers are rich in dark pigments and resins, and it delivers a more assertive, almost astringent character. If you are looking to add a firm, earthy bitterness that sits alongside – rather than replaces – your hops, bell heather is your ally. The aroma is spicy, with notes of clove, black pepper and a hint of dried fruit. It can also bring a subtle smokiness, especially if the flowers have been dried over a peat fire, though that is a technique for another day. Use bell heather sparingly. For a 20-litre batch, 15 to 25 grams of dried flowers added at the start of a 60-minute boil will give you a noticeable but not overpowering bitterness. Fresh flowers are milder, so you might double that quantity.

Ling Heather: Softness and Honey

Ling heather is the gentle soul. Its flowers are paler – lilac, mauve or almost white – and they carry a delicate, honeyed sweetness with floral undertones. This is the heather most often associated with traditional Scottish heather ale, and for good reason. Ling adds a soft, rounded aroma that evokes heather honey, with a slight earthy, peaty undertone. It contributes very little bitterness, so it is best used as a late addition or even in the whirlpool or secondary fermenter. For aroma, add 30 to 50 grams of dried ling flowers in the last five minutes of the boil, or steep them in the wort once it has cooled to around 80°C. The result is a fragrant, almost perfumed pint that still lets the malt and hops speak.

How Each Affects Bitterness, Aroma and Colour

• Bitterness: Bell heather gives a firm, resinous bitterness that lingers on the palate. Ling heather offers almost no bitterness, just a soft, herbal edge. If you want a bitter heather ale, use bell; if you want a smooth, malt-forward brew, use ling.
• Aroma: Bell heather is spicy, pungent and slightly medicinal. Ling heather is sweet, floral and honey-like. Both can be used together – a small amount of bell for backbone, a larger amount of ling for top notes.
• Colour: Bell heather will deepen your beer’s colour, pushing it towards amber, copper or even a ruby hue. Ling heather keeps the colour lighter, adding just a warm golden glow. If you are brewing a pale ale, stick with ling; for a darker, richer ale, bell heather is your friend.

Practical Brewing Tips for Heather Ale

Harvest heather on a dry day, ideally in the morning after the dew has lifted but before the sun gets too hot. Pick only the top few centimetres of flowering shoots – the tips, not the woody stems. You can use the flowers fresh, but drying them concentrates the flavour and makes them easier to store. Spread them out in a warm, airy room away from direct sunlight. When brewing, treat heather as you would a delicate herb. Boiling it for too long, especially bell heather, can extract harsh tannins. For ling, a late addition is almost always better. If you are unsure, start with half the quantity you think you need. You can always add more in a secondary infusion, but you cannot take it out.

Blending and Experimenting

Many of the best heather ales use a blend of both species. A common approach is to add bell heather at the start of the boil for bitterness and colour, then finish with ling heather in the last few minutes for aroma. This gives you the best of both worlds: a beer with structure, depth and that unmistakable floral perfume. You can also experiment with other heathers, such as cross-leaved heath, but bell and ling remain the most reliable. Remember that heather ale is not a hop replacement – it is a complementary ingredient. Keep your hop schedule simple, perhaps using a neutral bittering hop and a small amount of aroma hops, so the heather can shine. Brew a small batch first, take notes, and adjust. The moors will reward your patience.