1. Combine the 1/2 cup sugar and the tablespoon of water in a medium non-stick saucepan. Swirl the sugar and water until just combined. Turn the heat up to high, and allow to bubble and turn golden brown.
2. When the caramel turns golden, add the half and half and whisk. At first the caramel hardens, but it melts into the half and half as it heats. Whisking prevents burnt caramel.
3. Add the vanilla extract and the salt. Whisk again until well combined. Remove from heat.