1. Bring a small saucepan of water to a boil. Add peas; boil 1 minute. Drain and rinse with cold water; drain well. Bring Homemade Chicken Stock to a simmer in a small saucepan (do not boil). Keep warm over low heat.
2. Heat oil in a large saucepan over medium heat. Add leek and shallots to pan; cook 7 minutes or until tender, stirring frequently. Add rice; cook 1 minute, stirring constantly. Add wine; cook 30 seconds or until the liquid is nearly absorbed, stirring constantly. Stir in 1 cup stock; cook 4 minutes or until the liquid is nearly absorbed, stirring constantly. Add remaining stock, 1/2 cup at a time, stirring constantly until each portion of stock is absorbed before adding the next (about 25 minutes total). Stir in peas; cook 1 minute. Stir in cheese, rind, juice, salt, and pepper. Remove from heat; stir in tarragon and butter.