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Lemon balm

Aromatic culinary herb with a mild lemon scent

Wiki about lemon balm Nutri-Score A Vegan Yes Gluten-free Yes Lactose-free Yes Nut-free Yes
NUTRITION / 100 g
44 kcal 3.7 g Protein 8.0 g Kohlenhydrate 0.8 g Fett

Introduction

Fresh lemon balm leaves on a wooden board
I still remember well my first intense scent of lemon balm: a sunny morning at a farmers' market, a vendor handed me a bunch, and immediately that fresh, lemony, slightly minty smell spread like a little breeze of freshness. Since then the plant has found a permanent place in my herb garden and on my windowsill. For me lemon balm is not just an herb but a small feel-good ritual that enlivens drinks, desserts and savory dishes alike.

What I particularly love is the versatility. A few leaves in a glass of cold water turn it into a surprisingly invigorating drink; in an herb quark or a yogurt sauce it brings out both light acidic and sweet notes. A colleague of mine was astonished how well a simple lemon balm pesto went with grilled fish — we laughed about how such a plain herb can instantly make dishes seem more elegant.

The botany behind it is pleasantly down-to-earth: lemon balm is hardy, grows lushly and forgives mistakes in the garden, which suits me well as an often forgetful gardener. I like its soft, heart-shaped leaves and the small white flowers that attract bees and butterflies in summer. It can be used fresh, dried or its delicate oil can be used in desserts and cocktails.

Practical tips that have helped me:

  • Harvest: Early morning is when the essential oils are most intense, so cut leaves before the midday heat.
  • Storage: Fresh, wrapped in a damp cloth, the plant keeps for several days in the refrigerator.
  • Culinary combos: Works great with honey, citrus, cucumber, yogurt and mild cheeses.
When I have guests I like to sprinkle a few finely chopped leaves over summer fruit salads or stir them into homemade lemonade. The little bursts of aroma provide surprise and conversation. For me lemon balm is an invitation to rediscover everyday things with a pinch of freshness — always a little piece of summer in the kitchen.

Availability & types

Availability and types

Lemon balm is a very widespread and popular plant found in almost every part of the world. It originally comes from southern Europe and western Asia, but today it is cultivated in many countries. You can grow it in the garden, on the balcony, or in pots on the windowsill. This is because lemon balm is not very demanding: it likes sunny to partially shaded spots and ordinary garden soil. If you imagine the plant, it's about as easy to care for as a potted herb that should be watered regularly but must not sit too wet.

Growing regions

  • Europe: In countries like Germany, France and Italy lemon balm is commonly grown in gardens and herb beds. The climate is usually well suited.
  • Asia: In parts of western Asia the plant is native and is still cultivated.
  • North America: Lemon balm is also grown in the USA and Canada in home gardens and commercially.
  • Other regions: Because it is hardy, it can now be found worldwide as long as temperatures are not too extreme.
Available varieties and types

Lemon balm does not come in only one version. There are different varieties that vary somewhat in appearance, scent or growth. Here are some simple descriptions of the common variants:

  • Wild form / common lemon balm: This is the normal, most common variety. It has green leaves and the typical fresh lemon scent. It grows bushy and is often planted in gardens.
  • Varieties with different leaf sizes: Some varieties have larger leaves, others smaller ones. Large leaves are practical if you want to harvest a lot for cooking or tea; small leaves are nicer for decoration.
  • Variegated or bicolored varieties: There are lemon balm plants with lighter or two-colored leaves (this is called "variegated"). These look especially decorative in an herb bed and are an attractive sight on the balcony.
  • More strongly scented varieties: Some variants give off a more intense lemon smell. This is especially nice when you tear fresh leaves, put them in tea or use them in desserts.
  • Wild relatives: There are plants that look similar to lemon balm but smell different or have slightly other properties. Therefore it is always good to smell them to be sure it is lemon balm.
Where and how to get lemon balm?

  • Garden centers and DIY stores: There are often young potted plants that can be planted directly in the garden.
  • Supermarkets and weekly markets: Fresh leaves are sometimes sold in small bunches, similar to parsley or basil.
  • Online shops: Seeds, plants and dried leaves can also be ordered on the internet.
  • Grow your own: Lemon balm grows easily from seed or small cuttings (parts of a plant); it often propagates itself.
In summary: lemon balm is widespread and easy to obtain. There are simple and decorative varieties, you can grow it in many countries and it is suitable for gardens, pots or quick use in the kitchen. When choosing a plant pay attention to scent and leaf size — this helps you find what you need for tea, cooking or as a pretty balcony plant.

Details & nutrition

Property Value
Unit g
Calories per 100 44
Protein per 100 3.7
Carbohydrates per 100 8.0
Sugar per 100 0.0
Fat per 100 0.8
Saturated fat per 100 0.2
Monounsaturated fat 0.1
Polyunsaturated fat 0.4
Fiber per 100 3.0
Vitamin C (mg) per 100 13
Vitamin D (IU) per 100 0
Calcium (mg) per 100 260
Iron (mg) per 100 3.2
Nutri-Score A
CO₂ footprint 0.2
Origin Europe
Gluten-free Yes
Lactose-free Yes
Nut-free Yes
Vegan Yes
Note Nutritional values refer to fresh lemon balm, consumed raw.

Technical & scientific information

Lemon balm (Melissa officinalis) is a perennial aromatic plant in the Lamiaceae family, valued for its lemony scent and versatile uses in cooking, pharmacy and herbal medicine. The herbaceous plants typically reach 30–70 cm in height and form opposite, slightly hairy leaves as well as small white to pale pink flowers. Botanically lemon balm belongs to the mint family and is found both wild and under cultivation.

Chemical composition and constituents
The foliage of lemon balm contains a complex mixture of volatile and non-volatile compounds. Crucial for aroma and pharmacological effects are the essential oils, which mainly comprise monoterpenes and sesquiterpenes, including citral (neral and geranial), citronellal, geraniol and β-caryophyllene. The leaves also contain polyphenols such as rosmarinic acid, flavonoids (e.g. luteolin and apigenin derivatives), caffeic acid derivatives as well as tannins and bitter compounds. The essential oil content varies with origin, harvest time and cultivation method and typically ranges between 0.03 and 0.2% of fresh weight.

Nutritional values
Fresh lemon balm provides only small amounts of macronutrients, but it is a source of vitamins, minerals and plant secondary metabolites. Per 100 g of fresh leaves only trace amounts of calories, protein and carbohydrates are expected, while vitamin C, beta-carotene (as provitamin A), potassium and iron may occur in relevant trace amounts. Because of the low calorie content lemon balm is usually used as a flavoring ingredient rather than a significant nutrient source.

Processing and applications
Lemon balm can be processed fresh, dried or as an extract. Common processing methods include:

  • Fresh use in salads, desserts, beverages and as a flavoring ingredient.
  • Drying by hanging in a well-ventilated place or gentle heating at low temperatures to preserve the essential oil.
  • Distillation to obtain the essential oil, using hydrodistillation procedures.
  • Production of alcoholic or aqueous extracts as well as standardized dry extracts for the herbal pharmaceutical industry.
The choice of method affects the aroma profile and the concentration of bioactive compounds; temperature-related losses of volatile components should be considered.
Pharmacological and health aspects
Various pharmacological activities have been described in preclinical studies, including anxiolytic, spasmolytic, antimicrobial and antioxidant effects. Rosmarinic acid is considered mainly responsible for antioxidant and inflammation-modulating properties. Clinical data are more limited, but there is evidence that standardized lemon balm extracts may help with mild to moderate anxiety and sleep disturbances as well as with functional gastrointestinal complaints. Topical preparations are sometimes used for herpes simplex infections, with antiviral effects described in vitro.
Safety and interactions
Lemon balm is considered safe when used culinarily in the usual amounts. At therapeutic doses side effects such as gastrointestinal complaints or allergic reactions may occur. Because of potential sedative effects caution is advised with concomitant use of sedatives. Interactions with thyroid hormones have occasionally been discussed, as lemon balm preparations can affect thyroid enzymes in vitro; robust clinical evidence for this is limited. Pregnant and breastfeeding women should consult a physician before using therapeutic doses.
Cultivation and quality factors
For a high essential oil content the site, harvest time and plant variety are decisive. Sunny to partially shaded locations with well-drained soils favor oil accumulation. Harvesting is usually done before or during flowering to achieve optimal concentrations of aromatic compounds. Quality controls include organoleptic testing, determination of essential oil content by gas chromatography and detection of characteristic markers such as rosmarinic acid.
In summary, lemon balm is a versatile, chemically well-characterized culinary and medicinal plant whose effects rely on an interplay of volatile oils and polyphenolic compounds. While traditional uses are widely documented, modern analytical and pharmacological studies provide targeted insights into constituents, mechanisms of action and quality parameters that are relevant for both culinary and therapeutic use.
Wiki entry for: lemon balm
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