Halacha: What Blessing Is Recited for Avocado?

The blessing for avocado is "Borei P'ri Ha'etz" (initial blessing)

After eating, the blessing is "Borei Nefashot" (final blessing)

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The amount needed to obligate a final blessing (from "Halacha Yomit" by the rulings of Maran Rabbi Ovadia Yosef zt"l):

For everything a person eats, they must recite an "initial blessing," such as "Shehakol" or "Ha'etz." Even if one consumes only a small amount of a food, they must bless it, as long as they intend to eat it. (However, if one only tastes the food to adjust seasoning, for example, no blessing is required). Thus, someone who chews flavored chewing gum, even if they swallow very little, must still bless for the enjoyment from its taste. Similarly, if one comes to drink something, they must bless even if they drink only a single drop.

This is specifically regarding the initial blessing, but for the final blessing, it is only recited if one ate "significant consumption." The measure of significant consumption is the size of an "olive," which is twenty-seven grams, and for drinking, the measure is a "revi'it," which is eighty-one grams.

Additionally, the eating or drinking must be within a timeframe that they can be considered as one consumption. For instance, if someone eats the measure of an "olive" of bread over an entire day, bit by bit, they cannot recite the final blessing. Instead, the consumption of the "olive" size must be within the timeframe of "k'dei achilat pras," and opinions differ on this duration. Some say it is five minutes and others say seven and a half minutes (with further viewpoints). Therefore, it is advisable to always consume the measure of an "olive" (especially during Shabbat meals) within four and a half minutes to meet all opinions.

Concerning the final blessing on drinks, one needs to drink a "revi'it" (eighty-one grams) at once. If there were pauses between sips, no final blessing is recited. Thus, someone drinking soup with a spoon does not recite a final blessing for that soup, as they did not consume a "revi'it" at once. Similarly, a person drinking hot coffee or tea does not bless afterwards because they cannot drink it all at once.