Line a coffee cup with a doubled coffee filter. Pour 2 Tbs of Red Diamond Classic Blend Ground Coffee into the filter.
Heat 3/4 cup water in saucepan on stove to boiling. Remove only 1/4 cup of water and pour over coffee grounds. Allow to steep for a few minutes until cooled down slightly.
While the coffee grounds are cooling, whisk sugar into remaining water and bring to a rapid boil. Cover and boil for about 6-8 minutes, or until the sugar and water begin to turn an amber brown color.
While the sugar mixture is simmering, remove coffee filter and grounds from coffee mug and gently squeeze the grounds to get any excess liquid out. Discard grounds and filter.
Very gently add cubed butter into the boiling sugar mixture, making sure not to splatter the mixture onto your hands. Whisk vigorously as the mixture will begin to bubble quickly.
Then slowly add in the heavy cream and whisk until foaming mostly subsides.
Add in vanilla, coffee and sea salt.
Bring mixture back to a boil to thicken, then remove from heat and allow to cool before serving.