The sequencers

To begin with, potatoes are shipped to the processing plant in trucks where they are cleaned by machines and peeled. 2 _____ they are sent through a tube at high speed and cut into long thin pieces of potato.

The chips are then placed into boxes and shipped to fast food restaurants across the country, where they are fried in deep fat fryers in front of customers. 7 _____, the fries are covered with salt

When using at the start of a sentence, which of these words need to be separated by a comma?

As a consequence

In the next stage

Following this

As a result

Subsequently

After that

Next

First

Can “after which” be used at the start of a sentence?

Are these sentences correct?

1. First the crop is grown and then it is harvested.
2. First, the crop is grown and then it is harvested.

After the crop is grown, it is harvested.

Once the crop has been grown, it is harvested.

When the crop has been grown, it is harvested.

After/once/when the crop is fully grown, it is harvested.

Once grown, the crop is harvested.

1. The juice is purified and then heated.

The juice is purified and then it is heated.

Are these sentences correct?

1 The juice is passed through a filter, which purifies it.

The juice is passed through a filter to purify.

2 The juice is heated, turning it into a syrup.

The juice is heated to turn it into a syrup. (Or to turn into a syrup)

3 The syrup is spun in a centrifuge, separating out the sugar crystals.

The syrup is spun in a centrifuge to separate out the sugar crystals from it. (Or without from it)

4 The sugar crystals are dried and cooled, which produces the final product

The sugar crystals are dried and cooled to produce the final product.

1. First, the plants are crushed to form a juice, which is then extracted.

First, the plants are crushed to form a juice, and the juice is then extracted.

1. During this/the heating step, the liquid content of the juice evaporates leaving behind a syrup.

Thanks a lot.