Adding milk to another jar of milk

[myheaven]

My girl is giving my about 40-50 oz a milking. Im running out of jars. Can I add am and pm milk that is fully cooled together. It would give me about 3 more jars. And more space in the fridge. Kids are sick or else I would not have this problem.
Thanks Beth

[dkdairygoats]

You can as long as you will be using it soon. I don't add warm milk to cold, but adding cold to cold is usually fine.

[goatsareus]

I always add warm to cold milk, never had a problem. I fill one gallon jar to the top and start on the next gallon jar, so I am always adding new milk to day old milk. I only milk once a day.

[Alice In TX/MO]

Adding warm to cold warms up the already cold milk and encourages bacteria growth. Or, it may be a speeding up of the acidification process. Based on my experience, adding warm to cold can result in an off taste.

If they are both cold, it's ok.

[goatsareus]

I have training in, and a life time certificate in food safety/food protection. Seeing you are living in wisconsin, I see absoultely no problem with adding your naturally cooled(!) milk to a jar of 40*F milk that I assume will be placed right back in the frig. Precious little, if any, bacterial growth will occur by adding 70*F milk to cold refrigerated milk. The added warm milk will quickly cool down by the cold milk and the refrigeration. I am quite careful with the cleanliness of my milking practices and assume you are too. And I speak from experience when I say I have no problems with milk quality by adding warm to cold milk.

[NYSaanen]

I would stick to mixing the cold with the cold.

Have mixed warm with cold in the past with limited success. Better safe than lose a batch of milk.