As through the week we too busy to cook we have gotten the idea of cooking a big bunch of food in the weekend, storing it in the fridge and eat it later in the week.
I am a bit concerned how long things will stay good in the fridge. For example mashed potatoes (which is prepared with milk), minced meat steaks or a cream-based sauce.
Are there any general rules of thumb that can be used to estimate how long things will stay good? And are there any 'dangerous' foods, foods that can be spoiled but not show any mold or smell strange, but are not good to eat?