Preheat the oven to 335°F/170°C. Boil a full kettle of water.
Add room temperature softened cream cheese, sugar, and salt to a large mixing bowl, beat with a hand mixer (medium speed) for about 30 seconds until smooth (See Note 1).
Add the lemon zest, lemon juice, and yogurt, mix with a hand mixer (low speed) for about 30 seconds until well combined.
Beat 2 large eggs in a separate bowl using a whisk until the color looks even. (Do not need to beat the eggs until frothy.) Pour the egg to the large mixing bowl, mix with a hand mixer (low speed) for about 30 seconds until well combined.
Add ½ cup of heavy whipping cream, mix with a hand mixer (low speed) for about 10 seconds until well combined. (Stop mixing as soon as the color of the batter looks even, do not over-mix.) Use a spatula to scrape the bottom and sides of the bowl to make sure everything is thoroughly combined.
Use a fine mesh strainer to sift the cornstarch to the batter. Fold the batter with a spatula until the cornstarch is evenly distributed.
Put the springform pan in a deep baking pan. Place the fine mesh strainer on the springform pan, pour the cheesecake filling batter through the strainer to get rid of any lumps.
Pour about 1'' depth of boiling water into the deep baking pan. Bake on the medium-low rack of the oven at 335°F/170°C for 1 hour and 30 minutes until the cake is golden.
Remove the baking pan from the oven, remove the springform pan from the hot water bath, peel off the foil. While still hot, the center of the cheesecake should be wiggly when you shake it. It will be fully set after cools down.
Let the cheesecake cool to room temperature on your countertop. Cover with food wrap and keep the cheesecake in the refrigerator overnight.
Unmold the cheesecake from the springform pan. It already taste great now! You can slice and serve it directly. Or, if you want to make it even prettier, move on to the next decorating steps.