Celery
2.5Crisp and mild; best in raw preparations
As a marinade component, jicama's role is as a textural vehicle — matchsticks of jicama marinating in lime juice, chili, salt for 15-30 minutes at 40°F to soften edges without collapsing. The acid's pKa (2.4 for lime) penetrates 2-3mm in that window. Jicama's 86% water lets salt and acid enter fast; the dense fiber resists collapse past 45 minutes unlike cucumber. Substitutes must absorb marinade quickly without turning limp in the first hour.
Crisp and mild; best in raw preparations
Diced celery 1:1 cup marinates in 20-30 min at 40°F in lime-chili mixes — absorbs acid to 2-3mm depth. Crunch softens after 45 min, so don't extend past 1 hour. Celery's own volatiles add complexity jicama doesn't; suits Mexican-inspired slaw marinades where extra aroma adds interest.