Butter in tomato soup. I'm going to have to think about that one.

Bisque has tiny little lumps of tomato. I think it is also a little richer but that could just be wishful thinking.

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Hmm, just ran off to check the nutrition info. A half-cup serving of plain tomato soup made with water has 0 grams of fat. The bisque has 3.5 grams. Guess the butter makes sense. We use 1% milk and kind of skimp on that.