Sparks only lists diameter (and not length) nor weight. A 6 inch 2.25" diameter potato will have more mass & calories than a 4 inch 2.25" diameter potato. And their diameter ranges overlap so I'm scratching my head at Sparks on this.
Sorry - wish I could be of more help. Curious how the cooks out there reply to this question! Maybe post your Q on Spark Recipes?
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