Black tea making process

Abstract

The invention discloses a black tea making process. The black tea making process comprises the following steps that S1, stevia rebaudian leaf raw materials required for preparing black tea are picked in a tea garden in a sunny day at ten o'clock in the morning; S2, the picked stevia rebaudian leaves are flatly laid on the surface of a withering groove carrier plate and covered with a rubber net plate, and withering operation is carried out; and S3, the withered stevia rebaudiana leaves are manually rolled, so that the cell damage rate of the stevia rebaudiana leaves reaches 80%-85%. According to the method, withering is carried out in three parts, namely standing withering is carried out for 3-5 hours, hot air withering is carried out for 0.6-0.8 hour, and natural temperature withering is carried out for 0.5 hour, the temperature of electric heating equipment is set to be 45-48 DEG C, and the air speed of fan equipment is set to be 1.2 m / s; during natural temperature withering, a power supply of electric heating equipment needs to be cut off, and the air speed of fan equipment is adjusted to be 1.5 m / s; and withering is carried out by driving the carrier plate and the rubber net plate to rotate repeatedly by a motor, and the rotating speed is 120-150 revolutions per minute, so that the withering degree is effectively improved, the time required by withering is shortened, and the phenomenon of insufficient withering is avoided.

Description

technical field [0001] The invention relates to a production process, in particular to a black tea production process, and belongs to the technical field of black tea production. Background technique [0002] Stevia is a perennial herbaceous plant belonging to the family Asteraceae. Plant height 1-1.3 meters. Root shoot hypertrophy, 50-60, up to 25 cm long. The stem is erect, the base is lignified, the upper part is soft, densely covered with short hairs, the base of the corolla is light purple or white, and the upper part is white. Achene linear, slightly flattened, brown, with pappus. The flowering period is from July to September, and the fruiting period is from September to November. This species likes to grow in a warm and humid environment and is sensitive to light. The leaves contain 6-12% inulin, and the fine product is white powder. It is a low-calorie, high-sweet natural sweetener, and is one of the raw materials for the food and pharmaceutical industries. [...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of black tea production process, to solve the problem that more withering time is needed when preparing black tea proposed in the above-mentioned background technology, the time cost of input is relatively large, and the degree of black tea withering is very high, and the stacked stevia rebaudiana It is likely to cause insufficient withering and affect the taste of black tea. At the same time, stevia black tea is not suitable for people with dry and hot constitutions, resulting in a poor sales market for stevia black tea.