1st of all, l'm afraid you have to go to Wallies!!!!
Go to the "fresh" beef section, bottom shelf/row will be BRISKET in large vacuum packed portions costing from $17.50 to about $24..........
Buy yourself a donut for getting this far as you leave Wallies.
Now, depending on the size of your family, you will need to cut the brisket into meal sized portions.(we cut it into 4 sections, which means 4 portions per section, or 2 nights' dinner for 2)
Freeze 3 sections, marinade the unfroze piece in a pirex or similar in a small amount of smoked sauce just rubbed into it, but not so as it's gunky, then sprinkle with Worcestershire sauce & teriyaki sauce, some Italian herbs & cilantro or whatever takes your fancy, (no more salt as the sauces have plenty in them)
Put the meat FAT SIDE UP!!!
I leave it in the fridge covered with silver foil overnight then in the morning
set the oven to 350'f, put in the roast with the foil still covering it, then after 1/2hr turn it down to 275'f & go & ride your 'bike for 6hrs at least!!!!
If you decide to stay out 8 or even 10hrs it will only get better!!
15 minutes before you have cooked whatever veggies you like (l throw some par boiled 'taters around the roast when there's about 2hrs left to eating time) then take off the foil or lid & set the oven to broil/grill & put the top of the roast about 8-10" below the flame/element.
Let it "sit" for about 15mins after bringing it out of the oven then cut it against the grain........gravy can be made from the juices!!!
Don't invite anyone over to share it or you'll never get rid of them!!!