Historically, limoncello is produced through the traditional method of maceration, where the zest of intensely aromatic, thick-skinned lemons is steeped in high-proof neutral grain alcohol or vodka. This process, which can last from several days to two months, relies on the principle of diffusion to extract essential oils and pigments from the flavedo. Once the alcohol acquires a vibrant yellow hue and the peels become brittle, the infusion is filtered and blended with a cooled simple syrup made of water and sugar to achieve its characteristic bittersweet profile.

Modern and industrial extraction techniques have evolved to improve efficiency and consistency. Contemporary methods include the use of the Naviglio extractor, which employs a negative pressure gradient to accelerate solid-liquid extraction at room temperature, and sous-vide techniques that use controlled heat (around 130°F) to reduce infusion time to just a few hours. Additionally, specialized "sling" methods involve suspending lemons over alcohol in a closed environment, allowing volatilized alcohol to penetrate the peel and drip back down, creating a pure, bright flavor without the potential bitterness of direct contact with the pith.

Limoncello is a relatively modern note in fine perfumery, celebrated for its ability to convey a bright, zesty, and slightly boozy Italian charm. One of the most recognizable modern compositions featuring this note is El Ganso Limoncello Season for men, an Eau de Toilette launched in 2021. This citrus fougère fragrance is explicitly inspired by the Italian digestif, blending the lemon/lime tang with ozonic notes, apple, and ginger to create a sparkling, inviting scent ideal for summer and casual wear.

The note is also a key component in the increasingly popular gourmand citrus category. Sabrina Carpenter Sweet Tooth Lemon Pie is a modern example showcasing the sweet, dessert-like application of limoncello. Similarly, Prada Candy Florale utilizes the note to provide a sparkling, sweet-tart opening to a more traditionally floral and musky composition. In niche perfumery, Versatile Rital Date offers a radically original, culinary-inspired take, pairing a limoncello accord with savory notes like pesto and oregano.

Beyond mainstream and gourmand uses, Limoncello acts as a sophisticated, bright contrast in high-end and complex fragrances. In Byredo Oud Immortel, the sharp, bitter-sweet quality of limoncello is used to provide an unexpected, zesty lift against the smoky depth of oud and patchouli, demonstrating its capacity to blend with heavier notes. This versatility is also evident in Scentido Limoncello Extrait de Parfum, where it is blended with Calabrian bergamot, ginger, and black tea for a long-lasting, mature, and refined citrus experience that goes beyond a simple summer splash.

• Production is closely tied to the winter citrus harvest, particularly between November and March, when lemons like the Sfusato Amalfitano and Sorrento reach their peak fragrance and juice quality
• The traditional liqueur is often prepared in winter to preserve the vibrant flavors of the fruit for enjoyment throughout the rest of the year
• The scent is most strongly associated with the summer season, serving as a bright, refreshing, and sunny olfactory symbol of the Italian coastline and warm-weather gatherings
• Limoncello-based products and beverages frequently appear as seasonal specialties during the summer months, emphasizing its role as a cooling, zesty accompaniment to the heat
• In certain microclimates like the Amalfi Coast, the consistent sun and sea breezes allow for extended growing periods, though the most aromatic zest is still gathered during the primary harvest window