Lemon
Citrus limon · Sicilian lemon (traditional variety) · Meyer lemon (sweeter, hybrid)
The lemon is one of the most practically important ingredients in a kitchen, present in some form in almost every cuisine that has access to it. Its power is dual: the juice provides acidity (from citric acid, pH ~2–2.6) that brightens and balances, while the zest contains the essential oils of the outer rind — limonene and other terpenes — which provide an entirely different quality of lemon flavour, far more complex and aromatic than the juice alone. Using both together produces a lemon character of real depth.
The juice is sharply acidic with a clean citrus character and minimal sweetness. The zest is aromatic, floral and intensely lemony with almost no acidity. Together: a full, complex lemon presence. The juice brightens; the zest deepens.
The juice is thin and watery. The zest provides no textural contribution in most applications. Lemon segments (supreme) retain a soft, yielding texture with the membrane removed.
Room temperature for up to 1 week; refrigerate for up to 3 weeks. Zested or juiced lemons deteriorate faster — wrap exposed flesh tightly and use within 2 days. Roll the lemon firmly on the counter before cutting to rupture the juice sacs and maximise yield.
Zest before juicing — it is physically impossible the other way around. Use a fine Microplane for zest: collect the yellow outer layer only, avoiding the white pith beneath (which is bitter). For maximum juice: microwave the whole lemon for 15 seconds, then roll firmly before cutting and squeezing.