I want to make fridge ice cream and the only receipe I can find calls for rennet tables where can I get find?

I believe you can find rennet by the jello and pudding aisle in the store.I want to make fridge ice cream and the only receipe I can find calls for rennet tables where can I get find?
Rennet tables/tablets are generally used when making cheese. Here is a link to purchase on-line:





http://www.cheesesupply.com/product_info鈥?/a>

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