We picked 6lbs wild boysenberries yesterday and had them home and turned into jam within 3 1/2 hours. It really is delicious stuff! The lemon helps setting and butter settles any scum that may have formed.I have always made jam by pouring into hot sterilized jars and have never killed anyone. If you would like to process in a hot water bath-feel free. I won't give directions here but someone in the canning forum could help you. I wash, dry then heat my jars in a hot oven while my jam cooks, then pour the jam in while the jars are hot out of the oven.