That's what my mom called this recipe - "ultimate" , so I am assuming it's very good. Recipe was in her own writing. You can subsitute the vanilla with grated lime zest or orange zest (according to mom). If you want more caramel syrup, use 3/4 cup sugar instead of 1/2. Also, when caramelizing the sugar, do NOT let it get too dark - it will turn bitter. NOTE: Prep time is estimated.