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Eleven 1/4 sheet trays
Celery Leaf Juice (See Note)
Heat 1/3 of celery leaf juice with sugar to just dissolve. Bloom gelatin sheets in chilled water and then gently squeeze sheets to remove liquid. Remove juice from heat and add gelatin, stirring to dissolve. Strain through a fine-meshed strainer and then add remaining celery leaf juice. Pour mixture into clean quarter sheet trays and chill until set. Cut and portion into small cubes and reserve refrigerated up to 7 days.
Use a high-grade juicer to extract juice. Strain juice through a fine-meshed chinois and reserve in an ice bath.