1/4 c. Dijon mustard
1/4 c. seed mustard
1/4 c. hot German mustard
1/4 c. distilled white vinegar
1/4 c. olive oil
1/2 c. apple juice
Fresh ground pepper
2 lb. chicken breasts

Combine all ingredients in a bowl. Whisk to emulsify. Add chicken and marinate for 3 hours before grilling.