Blueberry-Lime Parfaits

i love the word curd because it always reminds me of the most delicious things ever cheese curds and even though cheese makes my stomach feel ridiculous-still so delicious! anyway, i think this is talking about a different kind of curd, but blueberries mean you can't go wrong

FROM OPRAH (oprah.com)

(makes 4 servings)
FOR CURD:
6 egg yolks
1/2cup fresh lime juice (about 4 limes)
3/4cup sugar
4 tbsp (1/2 stick) cold, unsalted butter
Grated zest of 2 limes
FOR PARFAIT:
1 container (17oz) plain, fat-free Greek yogurt
1/3cup confectioners' sugar , plus more to taste
1 pint (about 3cups) blueberries
1 lime , cut into wedges
Directions:
TO MAKE THE CURD:
1. In a small, nonreactive saucepan, whisk egg yolks, lime juice, & sugar.
2. Set over medium heat, & stir constantly w/a wooden spoon until thickened, 10-12min.
3. Remove from heat; stir in butter 1tbsp at a time. Transfer to a bowl, press plastic wrap onto surface of the curd, & cool completely in refrigerator.
4. Stir zest into curd.
TO MAKE THE YOGURT:
5. Stir together yogurt & sugar.
TO SERVE:
6. In each of 4 six-oz glasses, layer yogurt, curd, and berries; repeat. Garnish w/a lime wedge.

http://www.oprah.com/recipe/food/recipesdesserts/200807_omag_parfaits