in a food processor, pulse the cookies until fine, add the butter and egg yolk and pulse until it's the texture of wet sand. press this down into the bottom of the springform pan and then set into the fridge for 30 min.

combine water with gelatin in a small cup and whisk to combine, let it sit.

beat the cream cheese until smooth, then add the sugar. in thirds, add the heavy cream and beat until smooth/combined.

microwave the gelatin for about 20-30 seconds (keep an eye on it) and when it's liquid, stir it into the cream cheese mixture and beat for a few seconds to combine.

Transfer ⅓ volume of filling to another bowl, add black sesame paste and mix well.

Pour half of the cream cheese filling into the pan, and then pour dollops of the black sesame mixture in, swirling around with a knife. Repeat and make the design on top pretty.

let the cheesecake set in the fridge for a minimum of three hours before eating. yum!