Place cardamom pods with seeds in heavy medium saucepan over medium-high heat. Stir until pods brown, about 5 minutes. Add milk, cream, and 1/4 cup sugar. Scrape seeds from vanilla bean into pan; add bean. Bring mixture to boil. Whisk egg yolks and remaining 1/4 cup sugar in medium bowl. Gradually whisk in hot milk mixture. Return mixture to same saucepan. Stir over medium-low heat until custard thickens and leaves path on back of spoon when finger is drawn across, stirring constantly, about 2 minutes (do not boil). Cover and chill until cold, about 3 hours. Strain into medium pitcher. (Can be made 2 days ahead. Cover and refrigerate.)