Related Clues:

• Pizza sauce herb
• Rathbone of film
• Base for 25-Down
• Like some advice
• White-bearded type
• Leafy herb
• Source of wisdom
• Leaves for cooking
• Grayish green
• Spice rack member
• Cleese's Mr. Fawlty
• Mint family herb
• Wise person
• Staple of Italian cuisine
• Step 3: Chop and garnish over 23-Across