Yad soledet bo

Um, the, uh, um, the, the question of the, of the gedar, uh, of the, the extent, the parameters of the kli rishon is once you remove the kli rishon from the heat, or you turn the heat off, and it stays where it is, but it slowly loses its heat.

If you put in your food item, uh, let's say you have a kli rishon that is on the fire, you have a pot of water, for example, that's on the fire, and you drop an egg into it after the flame has been turned off, have you still violated the biblical prohibition, or is it now rabbinic prohibition? Uh, it's a machloket achronim, and it seems that the consensus is that if it's still yad soledet bo, then it's still a biblical prohibition.

The water is, is conducting the heat, even if the heat is off.

And so, as long as it's yad soledet bo, you put a, a, an egg into that water while it's still a-above the temperature of yad soledet bo, then it's a biblical prohibition.

Even if the egg doesn't reach yad soledet bo, because you've done the action, and there's a concern that if you, uh, that if you were to, to leave it in that place, then it has the capacity to, uh, to reach yad soledet, that, uh, the egg has the capacity to reach yad soledet bo.

Uh, and, uh, the, and, uh, and there, when it, when it comes to cooking, uh, there are two elements that are always necessary from the perspective of the practitioner, and that is the action and time, because it almost always takes some amount of time for the heat to transfer into the food item.

So we'll look at, uh, at having both of those elements.

The other, the other case that, uh, that's similar, uh, is if you remove the, uh, the pot from, uh, from where that fire is, but there's still heat attached to it.

Heat is the first measurement that we need to discuss.

The sheer of Bishul, the measurement of what is, uh, of, of heat rather, uh, that, uh, constitutes Bishul, that constitutes cooking in general, is Yad Soledet Bo.

If something is Yad Soledet Bo, uh, if, uh, if something is heated to the extent of Yad Soledet Bo, that's the general category of what constitutes, uh, Bishul, which is, uh, according to Rav Shlomo Zalman Auerbach, forty-five degrees Celsius, which is a hundred and thirteen degrees Fahrenheit.

And he says it's not less, it's, it's not less than, um, uh, a hundred and, uh, uh, thirteen degrees Fahrenheit, and in pressing circumstances as a, as a leniency, it could be as little as forty degrees Fahrenheit.

Now the entire conversation about what Yad Soledet Bo is, is of, you know, sorry, not forty degrees, a hundred and, and nine degrees Fahrenheit.

The, the entire, uh, um, discussion of what Yad Soledet Bo has a, a fascinating interplay of, uh, of kula and chumra back and forth from each other.

Because you might say, uh, if I'm cooking something, then the higher that the temperature of Yad Soledet Bo is considered, that's going to be the more lenient position because I can put something on a flame that's anything under Yad Soledet Bo, and it will not constitute cooking.

That's true.