Rate any meal Love, Like or Dislike: under Meal preferences → Ratings (the heart in My Viva), on the Rate meals page from the menu, in the swap sheet, or on a past delivery.
Ratings drive Shuffle and Auto-pick: loved meals are picked first, liked ones next, and a disliked meal is never picked. Tap a rating again to clear it. A meal outside your filters can still be loved or liked, and then it’s eligible again.