To make the macadamia nut filling, use a small saucepan over medium heat and combine the sugar and water, then bring to a boil and cook until it caramelizes to a nice amber color. Remove from heat and add the cream slowly. Return to heat and stir until sugar and cream are completely incorporated and smooth. Add butter, candied ginger, and chopped nuts, then allow to cool slightly. If mixture gets too firm, simply warm to make pliable.
To assemble, place the 4 spring roll wrappers down on the table so 1 point is facing 6 o'clock. Divide the mixture evenly between the 4 wrappers. Fold the point facing 6 o'clock over the filling and continue to roll. Fold over the left side, and then the right side to seal the ends and continue to roll until a small triangle remains. Brush edge with water and press to seal the end. Fry in 360 degree F oil just to brown the skin. Cut in half and put aside.
To make the Brown Sugar Ice Cream, begin by bringing the milk, heavy cream, split vanilla bean, and sugar to a boil. Combine yolks and karo syrup and stir. Pour half of the boiling liquid into the yolks and stir until combined. Add remaining liquid and put back on the heat and continue to stir until you reach a temperature of 180 degrees F. Strain and cool in an ice bath. Place in an ice cream freezer and freeze according to manufacturer's instructions.
To make the Pickled Carambola, using a medium pot over medium high heat, combine vinegar, sugar, ginger, peppercorns, anise, vanilla, and saffron. Bring just to a boil, then remove from heat. Add carambola, and let steep for 5 minutes. Remove carambola with skimmer and cool. Cool liquid over an ice bath. Add cold carambola to cold syrup, cover, and keep refrigerated.
To plate, place both spring rolls on a plate with a bowl of the pickled carambola and a bowl of brown sugar ice cream. Serve immediately.