How much should I change my cooking time for a 3 pound pork shoulder?

thornlizard

New member
I have a recipe that calls for slow-roasting a 5 - 6 pound Boston butt pork shoulder at 275 for 4-6 hours. If I want to half the recipe to a 2.5 or 3 pound roast, how long should I cook it for? Also, 4-6 hours is quite a wide range... how will i know it's done? I have a meat thermometer, at what temperature will my roast be done? I have some other sides and things I want to prepare so that everything's ready at once, and it's hard to know when to start making them. Thanks!
I'd like to stick with the slow cooking idea and keep the temp at 275 per the recipe, if possible.
 
Place your 3lb. roast roasting pan in 300 degree preheated oven, and cook for 1 hour and 45 minutes. Increase the oven temperature to 425 degrees F, and cook for an additional 15 minutes to brown the meat.
 
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