Lactuca sativa var. angustana
Celtuce is a stem lettuce: a lettuce grown mainly for its thick crisp stalk rather than for a head of leaves.1 McGee describes it as especially popular in Asia, where the stalk is stripped, peeled, sliced, and cooked, while the younger leaves remain usable but secondary.1 Cornell’s vegetable-variety notes describe the stalk as thick and tender with a celery-like flavor, which is close enough to explain both the name and the confusion it causes. It is still lettuce, but it is lettuce that eats like a vegetable stem.2
That stalk is the important food part. Fresh celtuce has the watery crunch and faint bitterness you would expect from a lettuce relative, but the peeled stem has more density than salad greens and stays recognizable after cooking or fermentation.12 Like other lettuces, it bleeds white latex when cut; McGee points out that even the name Lactuca refers to that milky sap.1 The leaves can still be eaten, but the plant’s real value is that unusual middle ground between leaf and stalk.
In a Northeastern kitchen, celtuce makes sense less as a canonical regional crop than as a cool-season vegetable that can slot into the same part of the year as lettuce. Cornell’s gardening program lists it with a roughly ninety-day maturity window, which helps explain why it works as a deliberate garden vegetable rather than as an exotic one-off curiosity.2 That combination of crisp stem, lettuce bitterness, and enough structure to ferment or juice is exactly why it keeps turning up in experiments here.