For the reasons discussed earlier, Israelites with high level souls are careful with their ‘wine’ because they want to have pure connection to Binah. The word ‘wine’ in Hebrew ‘יין’ is numerically 70 to reveal connection to the seven sefirot from Malchut to Binah. When adding 3 for the number of letters we get the value of 73 for Chokmah, ‘חכמה’, revealing that the light that comes from Binah is originated from Chokmah.
After meals we bless the food with ‘Birkat Hamazon’. When we have three or more participants (age 13 or up) we can use wine to add additional and higher level connection. In such case we start the blessings with a ‘Zimun’, which means ‘invitation’. This ‘invitation’ includes a blessing of the name YHVH to unify the higher light with the blessings of the food, ‘Birkat Hamazon’.
For the ability to connect to Binah with the blessings, we need a perfectly Kosher wine as we explained in #84, #85 above.
Daily Zohar # 2710 – Shemini – The wine invitation