Bring pizza dough to room temperature. Cut the dough into strips and stretch/roll out. Roll up mini hotdogs in pizza dough so the dough wraps around twice – leaving the ends sticking out and cutting off any excess. Place on a lightly greased baking sheet until ready to boil.
Bring 5 Cups of water to a light boil. Add in 1/4 cup of Baking Soda. Once dissolved – boil wrapped hot dogs in water mixture for 20-30 seconds each (working in small batches). Remove and place back on baking tray. Brush each lightly with beaten egg and sprinkle with sea salt.
Bake in a preheated oven at 425˚F (220˚C) for 15-20 minutes – until the dough is nicely browned.
Preheat oven to 325°.
In a large bowl, combine the butter and sugars. Using mixer on medium speed, beat together until creamy. Add the vanilla and beat until combined. Sift the flour into the butter mixture and beat on low speed until a smooth soft dough forms.
Spray a 9×13 inch baking pan lightly with non-stick cooking spray. Press one-third of the dough evenly into the pan to form a bottom crust. Wrap remaining dough in plastic wrap and chill in refrigerator.
Bake crust until firm and the edges are a pale golden brown approx 20 minutes. Transfer pan to a wire rack and let cool about 15 minutes.
While the bottom crust is baking and the remaining dough is chilling, make the caramel filling. Place the unwrapped caramels in a microwave-safe bowl. Add the cream. Microwave on high for 1 minute. Remove from the microwave and stir until smooth. If caramels are not completely melted, microwave on high for 30-second intervals, stirring after each interval, until smooth.
Once the caramel is melted add in your ½ tsp vanilla and stir until combined.
Pour the caramel filling over the crust. If you are going to salt the caramel sprinkle it on caramel layer now.
Remove the remaining chilled dough from the refrigerator and crumble it evenly over the caramel.
Return the pan to the oven and bake until the filling is bubbly and the crumbled shortbread topping is firm and lightly golden, about 25 – 30 minutes.
Stir the salt into the yogurt and pour into the cheesecloth. Bring the cloth together into a bundle and secure with a string. Hang the bundle over a bowl (or wide pitcher), making sure the bottom of the cheesecloth is suspended in air (you don’t want it sitting in the liquid).
I used to do this by securing the bundle to a wooden spoon. Cover the whole contraption, and refrigerate for at least 24 hours, but go longer if you like – it’s all about personal preference. Much of the liquid will drain out and the yogurt will thicken. Remove from the cloth. You can use it as is, or stir in your favorite herbs or spices.