Balsamic Vinegar Strawberry Fudge Brownies

["For the Strawberry Balsamic Jam:", "1. Put the chopped strawberries, sugar, tapioca flour and 2 teaspoons of balsamic vinegar into a heavy saucepan on stove.", "2. Cook over medium heat until the berries disintegrate and the jam thickens. About 5 minutes.", "3. Remove from the heat and stir in the reserved 1 teaspoon of balsamic vinegar. Put aside while you make the brownie mix.", "", "Brownie Batter:", "1. Preheat the oven to 350 F. Take a piece of foil (or parchment paper) and line the inside of a 9"" x 9"" square pan, leaving a couple of inches overhang. Repeat going the opposite way, if the foil/paper doesn't reach properly. This will allow you pull the brownies up from the pan, without having to dig around in it, ruining your pan and your brownies.", "2. Put the butter and chocolate in a heavy saucepan. Over low heat, melt the butter and chocolate together.", "3. Remove from the stove and beat in the sugar and vanilla.", "4. Add the first egg and salt and beat. Then add the other egg, repeat. Add the flour.", "5. This is important. Stir the batter for a full minute or so until the mixture looks smooth and glossy and loses it's graininess. You want to get the flour completely hydrated and absorbed into the batter.", "6. Pour the batter into the pan. Spoon the jam onto and swirl a knife around, making sure to pull some of the jam to the edges of the pan. Don't swirl too much though, or the jam will just get incorporated into the brownie batter and it won't looks as pretty. Also you'll get air pockets. Again not pretty.", "", "7. Bake in the center of the oven for 30 minutes or until the center looks set. Don't overbake, these brownies are suppose to be fudgy.", "", "8. Let the brownies cool completely in the pan before you pull them out. To get perfectly cut brownies, you can freeze the brownies beforehand. But I'm not that fus"]