Whisk together the water and miso in a small bowl.
Combine with sugar and put in a small sauce pan on medium high heat.
Stir with a rubber spatula to incorporate the sugar and cook to a deep golden color.
Slowly pour in the heavy cream (room temperature) and be careful as it may bubble up.
Pour a tablespoon or two over each crisp when it comes out of the oven.
Serve with ice cream.