How much potassium can you eat at once and not develop hyperkalemia if you're taking angiotensin receptor blockers and have normal kidney function. for example eating a cup of yogurt with two bananas and some nuts is about 1000mg of potassium?

You ingested 1 gram of potassium. That is not dangerous with normal kidney function. The LD50 (lethal dose for 50%) of orally ingested potassium chloride is approximately 2.5 g/kg, or 190 grams (6.7 oz) for a body mass of 75 kilograms (165 lb). It would be very difficult indeed. You couldn’t possibly eat half a pound of this stuff, given its bitter, salty taste. You ingested 1 gram.