1/3 cup water
1/4 cup plus 3 tablespoons sugar
2 tablespoons fresh lime juice, divided
7 to 8 ripe passion fruits (about 11 ounces), halved
1 11.5-ounce can guava nectar (about 1 1/2 cups)
Special equipment: 8 3-ounce disposable paper cups; 8 ice pop sticks or lollipop sticks
Ingredient info: Choose passion fruit that is wrinkled on the outside, which indicates that the fruit is ripe.