Grind together carrots, celery, green pepper, and onion.

Drain the ground vegetables well to remove excess moisture.

In a blender, combine the vegetables with a small amount of water if necessary to aid blending.

Drain the blended vegetable mixture thoroughly.

In a bowl, mix the softened cream cheese with sour cream until you achieve a spreadable consistency.

Add the drained ground/blended vegetable mixture to the cream cheese mixture.

Stir in the vinegar, salt, and pepper.

Blend all ingredients together until well combined.

Refrigerate the mixture for about 2 days to allow flavors to meld.

Spread the refrigerated vegetable mixture on bread to make sandwiches.