Cut carrots lengthwise into quarters. Then, slice crosswise 1/4 inch (0.5 cm) thick. Place carrots in a saucepan and cover with water. Bring to a boil, uncovered, over high heat. Reduce heat to low and simmer until barely tender, from 3 to 5 minutes. Reserving 1/2 cup (125 mL) of cooking liquid, drain carrots and set aside. Meanwhile, cover raisins with hot tap water. Let stand 10 minutes to plump, then drain.