Related Clues:

• ___ Rathbone
• So-called 'royal herb'
• Pizzeria herb
• "Fawlty Towers" character
• Cook's herb
• Pizza sauce herb
• Rathbone of film
• Base for 25-Down
• Cleese's Mr. Fawlty
• Mint family herb
• Staple of Italian cuisine
• Step 3: Chop and garnish over 23-Across
• Pasta sauce herb
• Kitchen spice
• Spaghetti sauce herb