Help to translate Måltidssång by Bellman

A remmare is a rummer in English, a large drinking-glass with prunts to facilitate holding. 

So perhaps:
And then with a harsh expression
snatch the glass from his gob (i e to stop him from drinking more)

Och du, som med en ärlig min

Plär dina vänner häda jämt

Och dem förtalar vid ditt vin,

Och det liksom på skämt,

Och du, som ej försvarar dem,

Fästän ur deras flaskor, du,

Du väl kan slicka dina fem,

Vad svarar du väl nu?

And you, who with a straight/honest face

Always talk badly about your friends (häda actually means blaspheme but I couldn't put that into a sentence that made sense)

And slander them while you drink your wine

Like it is a joke

And you, who don't defend them

Even though (you drink) from their bottles, you

You can lick your fingers (I think the meaning here is that you gladly eat their food)

What do you answer? (Or What do you have to say for yourself?)

So the whole verse is about people taking advantage of friends and not being nice to them, and the singer is questioning their actions.

As a side note, even Swedish people have a hard time understanding Bellman word for word because the language has evolved a lot from his days.

Thank you very much for explanations!
I want to translate Maltidssang equirhythmically into Russian so that to sing it on Russian using original melody. I have already translated several songs, and you can see my translations on the page stihi.ru/avtor/fionov&book=1#1
Also I published them on my FB page, together with figures, made by a professional painter. I plan to publish a book. 
And now I have translated almost all Maltidssang, but without one this fragment. 
Concerning remmare and trut, I have correctly understood the meaning, thank you for explanation!

Concerning the phrase "Plär dina vänner häda jämt"
Is it correct, that "Plär" means "Plägar"
Like "tar" means "tagar"?
Answer, please!  It is very interesting!

Pravilno, can not write Cyrillic on my device.

Thank you very much for all! I have completed the translation! It is interesting that the word "remmare" is absent in dictionaries. And I have reconsidered the sence of the phrase
Du, vid din remmare och press
Rödbrusig och med hatt på sned,

I thought that "press" means a device for printing books and the phrase is about the press worker. But he is an drinker, not the worker. And I changed my translation according to new meaning.

I have translated Sma grodorna also, and this picture is for you. 

This is my translation of Maltidssang into Russian
stihi.ru/2020/11/26/9123
Thanks to all your messages! It was very helpful!

I think that a press is necessary for juice preparation. Then juice has to be transformed to vine. So, there is no vine directly from the press. But testing the ready vine is reasonable. 

Thank you for your advice. I can not draw pictures myself, I asked professional painter to do this for money. Now this work has been completed. Maybe in the future I shall ask the painter to draw a picture for Maltidssang, if my book project will be commercially successful.

Good luck with your book!