Tartar Sauce

1 tbsp (15 mL) minced sour pickles, 2 tsp (10 mL) nonpareil capers, 1 tbsp (15 mL) minced shallot, 1 tbsp (15 mL) chopped hard-cooked egg white, 1 tbsp (15 mL) sieved hard-cooked egg yolk, sugar to taste