From what I understand, this vessel would be filled with the ice cream mixture, and the lid placed on. It would then be shaken and stirred and placed inside a large bucket, filled with ice and salt.
Vintage Antique Victorian Pewter Banquet Ice Cream Mould Middle Section Only
(ref1CZ) Victorian pewter dessert ice cream jelly mould
Antique Victorian Pewter Ornate Fancy Fruit Design Ice Cream Food Jelly Mould
ANTIQUE W & CO PEWTER CHAMPAGNE ICE BUCKET PLANTER PLANT POT LIONS HEAD HANDLES
Two antique Victorian Pewter Quart Pewter & Brass Tankards. Brass rim 2 Small
Victorian Pewter Coastal Sunrise Relief Pin Dish 16.5cm Wide - Circa 1850.