Meanwhile, in a medium, heavy-bottomed saucepan over medium-low heat, cook 1/4 cup water and granulated sugar until sugar dissolves, about 5 minutes; do not stir. Increase heat to medium-high and boil, without stirring, until syrup becomes a deep-amber color, 5 to 6 minutes. Remove from heat and whisk in cream. Stir in butter and sea salt. Add pecans and stir to coat. Let cool for 10 minutes.