Terumot & Ma’aserot

There are people who prepare liqueur from the small fruits that grow on myrtle bushes (hadas) during this season of the year (hereinafter: "myrtle berries"). Is it necessary to separate terumot and ma'aserot from them?

How do we fulfill in our days the Mitzva of Viduy and Bi'ur Ma'aserot?

I separated terumot and ma'aserot from my potatoes, and accidentally cooked the potatoes that I set aside. How do I kasher the pot?

I have a tangerine tree in my backyard for seven years now. This year the tree yielded a lot of fruit, B”H. Do I have to take ma’aser each time I pick a certain amount of tangerines?

This year I prepared wine from grapes harvested after Sukkot. Ma’aser was not taken from these grapes, and I was told that I should set aside the ma’aser only after I finish making the wine. When is it considered the end of the wine-making process? Can I put off taking ma’aser until the wine is completely ready, after I transfer it into little bottles? Or can I only take the ma’aser when the wine is all together in the big bottle? Is there a different text for taking ma’aser on wine? I obviously can’t say “at the north” or “south” of the fruit.

If I pick a sprig of rosemary or another herb, does a single sprig at a time require separating ma'aser?

I have a fruit tree in my yard. I'm going to see a friend today who lives far away and that I only see occasionally, and that friend is any position where they need ma'aser ani. Can I pick fruit to give as ma'aser ani now, in advance, before I pick all of the fruit that that ma'aser ani belongs to?

I picked oranges from my tree, placed them in a bag, brought them inside and put them on the counter. I emptied the bag (or so I thought!) onto the counter, cut off more than 1%, and proceeded with the berachot and saying the text of separating terumot and ma'aserot.

A few minutes later, I realized that two oranges were still in the bag! I wasn't sure if I need to do the whole process again, since I did intend that the separation was for everything I picked. Granted, the oranges were still in the bag, but the bag was open and it was right next to the other oranges. Later on, I discovered that I had put an orange in my jacket pocket (and it was there with me at the time I separated terumot and ma'aserot.

What I did do was separate a bit from the two oranges (this was before I discovered the third in my pocket), and said the berachah without Hashem's name. Then I realized that it's best to just ask Torah VeHa'aretz Institute. J What do I do now, and does my second separation count?

I have a small vegetable patch in my yard. What is the order of the berachot on separating terumot and ma'aserot this year (5785)? Are we supposed to say the first berachah on separating terumot and maaserot and say the text? For the second berachah, are we supposed to substitute "ma'aser ani" for "ma'aser sheni"? Do we need to redeem it onto a coin? What do I do with the part of the vegetable I separated?