meats are virtually carb free
whole eggs have negligable amounts of carbs
flax oil/olive oil etc are 0% Carbs
oily Fish has very little if no carbs
Nuts, granted have carbs but in moderation you can still stick under 10g carbs with it
Cheese, carb free unless u get fancy cheese with bits of fruit in it
Heavy Cream, 1g carb per tbsp?
Full fat cottage cheese 6 grams per tub
i'd say they were all low carb sources... just how low do u want to go and why so low???