Possible Clues:

• So I grin (anag.)
• 'Beginnings, starting points (7)'
• Or is about gin for starters
• Onsets
• Darwin's study
• Starts over outfits keeping fashionable
• The alternative to one gin's enough for such sources
• The alternative to one drink is just for starters
• Or one drink's for starters?
• Sound like sauces with drinks at the end as starters