Add the sweetened condensed milk and vanilla to the pot, then continue to stir. Measure with a candy thermometer and continue cooking and stirring the mixture until it reaches 245 degrees. Work ...

5. Take 212 (boiling point of water at sea level) minus the temp you wrote down. (212 - 192 = 20) 6. Use the number calculated in step 5 to minus from the temperature called for in a recipe ...