great shield and will keep the frozen component very cold After I tested this cake I transferred it from the freezer to an insulated box and brought it home From there it stayed in the box at room temperature for 3 hours; when it was time to eat it, the center was still frozen When making an ice cream cake it is important to use components that will all have a similar texture when the cake is served No layer should be too hard and be difficult to cut, or so soft that it melts, causing the cake to collapse The corn syrup in the pineapple sorbet and the honey used in both the pineapple sorbet and the mango coulis are inverted sugars that do not harden too much in the freezer, allowing those layers of the vacherin to have a nice soft consistency like the banana ice cream layer, and preventing the mango coulis from becoming hard and icy When you make banana ice cream it is important to use perfectly ripe bananas; they should be deep yellow with some brown flecks Never use overripe bananas, as they have a foul smell If you need to ripen bananas you can leave them at room temperature and wait for them to get the right look, or to speed up the process you can place them in a brown bag with an apple or a tomato When a fruit ripens it releases ethylene, which creates enzymes that cause starches and acids to break down into sugar These enzymes also break down the cell walls and soften the fruit Apples and tomatoes speed up the ripening process because they produce a lot of ethylene INGREDIENTS | ... both the pineapple sorbet and the mango coulis are inverted sugars that do not harden too much in the freezer, allowing those layers of the vacherin to have a nice soft consistency like the banana ice cream layer,... to break down into sugar These enzymes also break down the cell walls and soften the fruit Apples and tomatoes speed up the ripening process because they produce a lot of ethylene INGREDIENTS |... overripe bananas, as they have a foul smell If you need to ripen bananas you can leave them at room temperature and wait for them to get the right look, or to speed up the process you can place them in a brown bag with