Possible Clues:

• Bake shop buys
• American or Canadian beverages
• Some Jim Beam quaffs
• Loaves that may be marbled
• Reuben holders
• American loaves maybe react to the addition of yeast, it's said
• Some bakery breads
• Sandwich shop delivery
• Some grain whiskeys
• 'Seeded' or 'unseeded' grocery choices