Stock
Stock is the liquid that meat, fish, poultry, bones, or vegetables have been simmered in. Similar to broth, stock is richer.
Useful Links:
Fun related videos
Simple Tips for Stocks & Broths - Kitchen Conundrums with Thomas Joseph

Stock vs Broth Makes All The Difference

VIDEO: MAKING CHICKEN STOCK

Culinary Classroom Lesson 7: Stock

How To Make Roasted Veal Stock
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Simple Tips for Stocks & Broths - Kitchen Conundrums with Thomas Joseph
Source: Everyday Food
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Stock vs Broth Makes All The Difference
Source: ChefToddMohr
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VIDEO: MAKING CHICKEN STOCK
Source: Boulder Daily Camera
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Culinary Classroom Lesson 7: Stock
Source: Dave Hegnauer
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How To Make Roasted Veal Stock
Source: Jacob Burton